DBx Ortho-Grip Tools: fitted upper extremity accommodation devices, shown in left-handed and right-handed knife silhouettes. Joint health, blood flow, and nerve function all matter.
Permanent benefits vs. temporary solutions — competitors sell sharpness that fades, DBx delivers benefits that last. 98% reduction in peak grip pressure. Engineering validated by instrumented testing.
ABx Performance Testing: Classic Chef Knife blade-centric pinch-grip averages 100 PSI vs. DBx handle-centric pinch-grip at 2.0 PSI — a 98% reduction into a biomechanically safe pressure range.
DBx Knives chef knives on a cutting board with fresh vegetables, and in use slicing a red onion.
DBx Knives left-handed sizing chart: optimized asymmetrical handle profiles across 14 sizes, from small women's (72mm) to men's large (96mm). Proper fit reduces grip strain by 80%.
DBx Knives right-handed sizing chart: optimized asymmetrical handle profiles across 14 sizes, from small women's (72mm) to men's large (96mm). Proper fit reduces grip strain by 80%.
Sharp knives deliver 0.15x temporary gain. DBx blade geometry delivers 2x permanent gain. Handle ergonomics deliver 25x. Dull DBx outperforms razor-sharp classic knives by 50x. ABx Performance Testing
Custom DBx Knives - options: laser engraved names, logos, and more. Personalized gifts for birthdays, graduations, and milestones. Hand-optimized, sized-to-fit, crafted in USA with Global Materials.
Handle size vs. grip stability: standard knives lose 50-80% grip, requiring 2-4x more clamping force. DBx Sized-to-Fit handles retain full stability. ABx Performance Testing.
Customer reviews of DBx Knives from a USDA food safety inspector, a retired professional chef, and a home cook and hunter, describing improved hand comfort and function with custom-fitted knives.
Customer reviews of DBx Knives from home cooks and a professionally trained chef, describing custom left- and right-handed fit, grip precision, and comfort.
Blood flow and nerve function: safe grip pressure 1.0-2.5 PSI. High pressure restricts blood flow, causing numbness and pain. Grip-slip and temperature-detection loss risk cuts and burns.
Classic grip wrist angles: 50-53° rotation, 32-38° down, 30° side, vs. DBx at 9°, 9°, 23°. DBx geometry reduces wrist angles below 25° an injury-risk threshold. ABx Performance Testing.
Handle Safety Logic — Pressure = Force ÷ Area. Classic handles concentrate force through 0.1 sq in, generating dangerous pressure. DBx spreads force across 2.0 sq in, cutting peak grip pressure 98%.
Hand damage reduces grip strength over time: men lose 20-53%, women 13-37% by age 100, while cut force stays at 14 lbs. DBx designed for cooks facing up to 80% grip loss. ABx Performance Testing.
DBx Ortho-Grip Tools: fitted upper extremity accommodation devices, shown in left-handed and right-handed knife silhouettes. Joint health, blood flow, and nerve function all matter.
Permanent benefits vs. temporary solutions — competitors sell sharpness that fades, DBx delivers benefits that last. 98% reduction in peak grip pressure. Engineering validated by instrumented testing.
ABx Performance Testing: Classic Chef Knife blade-centric pinch-grip averages 100 PSI vs. DBx handle-centric pinch-grip at 2.0 PSI — a 98% reduction into a biomechanically safe pressure range.
DBx Knives chef knives on a cutting board with fresh vegetables, and in use slicing a red onion.
DBx Knives left-handed sizing chart: optimized asymmetrical handle profiles across 14 sizes, from small women's (72mm) to men's large (96mm). Proper fit reduces grip strain by 80%.
DBx Knives right-handed sizing chart: optimized asymmetrical handle profiles across 14 sizes, from small women's (72mm) to men's large (96mm). Proper fit reduces grip strain by 80%.
Sharp knives deliver 0.15x temporary gain. DBx blade geometry delivers 2x permanent gain. Handle ergonomics deliver 25x. Dull DBx outperforms razor-sharp classic knives by 50x. ABx Performance Testing
Custom DBx Knives - options: laser engraved names, logos, and more. Personalized gifts for birthdays, graduations, and milestones. Hand-optimized, sized-to-fit, crafted in USA with Global Materials.
Handle size vs. grip stability: standard knives lose 50-80% grip, requiring 2-4x more clamping force. DBx Sized-to-Fit handles retain full stability. ABx Performance Testing.
Customer reviews of DBx Knives from a USDA food safety inspector, a retired professional chef, and a home cook and hunter, describing improved hand comfort and function with custom-fitted knives.
Customer reviews of DBx Knives from home cooks and a professionally trained chef, describing custom left- and right-handed fit, grip precision, and comfort.
Blood flow and nerve function: safe grip pressure 1.0-2.5 PSI. High pressure restricts blood flow, causing numbness and pain. Grip-slip and temperature-detection loss risk cuts and burns.
Classic grip wrist angles: 50-53° rotation, 32-38° down, 30° side, vs. DBx at 9°, 9°, 23°. DBx geometry reduces wrist angles below 25° an injury-risk threshold. ABx Performance Testing.
Handle Safety Logic — Pressure = Force ÷ Area. Classic handles concentrate force through 0.1 sq in, generating dangerous pressure. DBx spreads force across 2.0 sq in, cutting peak grip pressure 98%.
Hand damage reduces grip strength over time: men lose 20-53%, women 13-37% by age 100, while cut force stays at 14 lbs. DBx designed for cooks facing up to 80% grip loss. ABx Performance Testing.

DBx Ortho-Grip Knives

$185.00

Assistive Cutting Interface

Joint Health, Blood Flow & Nerve Function — All Matter

Upper Extremity Accommodation Devices— Sized-to-Fit.

DBx Ortho-Grip knives prioritize performance over aesthetics — building on the same custom-fit, force-distributing handle principles as our DBx Chef Knife series (98% grip pressure reduction, 80% less hand strain, 90%+ lower injury risk), with blade geometry further optimized for altered-anatomy and advanced-condition use.

"Every handle is built to your measurements — not approximated from a size chart."

Your knife, your fit:

  • 14 custom sizes, right and left-handed for people with or without altered hand anatomy

  • Fitted handle geometry reduces wrist angles & improves grip stability significantly over the constant-pressure classic friction-based grip.

  • Imported 57±1 HRC steel, to support thin, high performance, low-stiction, low-cut-force, blade bevel profiles

  • Handcrafted in USA with Global Materials

Who it's for: individuals with physical limitations, amputation, or altered upper-extremity anatomy — and. anyone managing hand pain, arthritis, tremors, carpal tunnel, or reduced grip strength who refuses to give up the kitchen.

How to order: Measure your hand width. Select Left or Right-handed. That's it.

L/R Hand ?:
Colors:
M/W Sizes:

Assistive Cutting Interface

Joint Health, Blood Flow & Nerve Function — All Matter

Upper Extremity Accommodation Devices— Sized-to-Fit.

DBx Ortho-Grip knives prioritize performance over aesthetics — building on the same custom-fit, force-distributing handle principles as our DBx Chef Knife series (98% grip pressure reduction, 80% less hand strain, 90%+ lower injury risk), with blade geometry further optimized for altered-anatomy and advanced-condition use.

"Every handle is built to your measurements — not approximated from a size chart."

Your knife, your fit:

  • 14 custom sizes, right and left-handed for people with or without altered hand anatomy

  • Fitted handle geometry reduces wrist angles & improves grip stability significantly over the constant-pressure classic friction-based grip.

  • Imported 57±1 HRC steel, to support thin, high performance, low-stiction, low-cut-force, blade bevel profiles

  • Handcrafted in USA with Global Materials

Who it's for: individuals with physical limitations, amputation, or altered upper-extremity anatomy — and. anyone managing hand pain, arthritis, tremors, carpal tunnel, or reduced grip strength who refuses to give up the kitchen.

How to order: Measure your hand width. Select Left or Right-handed. That's it.

. More Info .

Understanding . . .
‍ ‍The Problem

Permanent benefits versus temporary solutions — competitors sell sharpness that fades, DBx delivers benefits that last. 98% reduction in average peak grip pressures. Engineering backed by data and validated by instrumented testing.

Traditional chef knives average 100 PSI peak grip pressure . . . 40x above the biomechanically safe
threshold of 1.0 to 2.5 PSI.

DBx handles reduce avg. peak grip pressure to
under 2.0 PSI.

A 98% reduction into relatively safe intermittent pressure levels. ABx Performance Testing

Why Sharpening . . .
‍ Is not the answer

Blade sharpness delivers 0.15x temporary gain fading in days. DBx blade geometry delivers 2x permanent gain. DBx handle ergonomics deliver 25x permanent gain. Dull DBx outperforms razor-sharp classic knives by 50x. ABx Performance Testing.

Blade sharpness accounts for only 15% of cutting force requirements . . . in high density foods and
that advantage fades in days to weeks.

DBx handle ergonomics deliver a 25x permanent performance gain.

Even a relatively dull DBx knife outperforms
a razor-sharp classic chef knife by 50x.
ABx Performance Testing.

How DBx Eliminates
The Root Causes

Chart comparing handle size to grip stability: standard knife handles lose 50 to 80 percent grip and require 2 to 4 times more clamping force, while DBx Sized-to-Fit handles retain full grip stability, per ABx Performance Testing.

Wrong-Sized Handles Require 2x To 4x More Clamping Force To Maintain Control.

DBx Offers 14 Asymmetrical Handle Sizes For Left Handed Users And 14 For Right Handed Users
- Eliminating Grip Instability Entirely.

Custom Sizing Reduces Clamping Force By 50-80%, Eliminating Fatigue, Numbness And Pain.

Custom Modifications Available For Special Requirements. ABx Performance Testing.

How to measure for
Custom Fitted Handles

Photos demonstrating how to measure hand width at the base of the fingers using a tape measure, for both left and right hands. 14 left- and right-hand DBx handle sizes available for your perfect fit.

Every DBx Knife Begins With One Measurement . . .

Your Palm Width At The Base Of Your Fingers.

Hand Width In Millimeters Equals Handle Size.

Your knife . . .
- your choice

How to order: select your size using hand width in millimeters as handle size, available in 2mm increments. Choose blade length and handle color. Select left- or right-handed. That's it.


Select - Handle Size .
Hand Width In MilliMeters

Choose Your Blade Length . . .
————————————————-
- 6 Inches - ( 150 MM )
‍ ‍- 7 Inches - ( 175 MM )
‍ ‍ - 8 Inches -( 200 MM)
‍ ‍- Custom Length (IN/MM)

Choose Your Handle Color . . .
—————————————————
Dark Red ( Old Wine )
Metallic Blue (Sea Blue)
Black - Or -Custom Color

Select - Left Or Right Handed
—————————————————
That's It.

Conversion Chart

How to measure for your DBx handle size — measure hand width at base of fingers. Convert inches to millimeters: 2.75 inch equals 70mm, 3.0 equals 76mm, 3.5 equals 88mm, 3.75 equals 96mm. 14 left and right-hand sizes. Women's 70-84mm, men's 82-96mm.

Women's Handle Sizes:

70, 72, 74, 76, 78, 80, 82, 84mm.

Men's Handle Sizes:

82, 84, 86, 88, 90, 92, 94, 96mm.

Available In 2mm Increments.

If Your Measurement Falls Between Sizes
Choose Based On Your Preference For
A Snugger Or More Relaxed Fit.

The Benefits

The reduction or elimination of
Stress, strain & related injuries.

Precision cutting — Reduced Risk Of Accidental Cuts And Lacerations.

Restored Nerve function - Eliminating
Grip-Slip And Temperature Detection Loss.

Improved blood flow . . . reducing scar tissue accumulation - the root cause of tendonitis & Arthritis.

Chart of average hand sizes covering 96 percent of the population: small women's 72mm, average women's 78mm, men's average 88mm, men's large 96mm. Handle sizes available in 2mm increments.

  • ⚠️ WARNING: This product can expose you to chemicals including Bisphenol A (BPA), which is known to the State of California to cause birth defects or other reproductive harm. 

    For more information go to www.P65Warnings.ca.gov

Custom Modifications Available For
Upper Extremity Accommodations.

Handcrafted In USA with Global Materials