Top 9 4mm Allen Wrench – Hex Keys

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1. Park Tool

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2mm, Park Tool AWS-10 Fold-Up Hex Wrench Set, 1.5mm, 2.5mm, 5mm, 3mm, 6mm, 4mm

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Park Tool #ad - Wrenches made from industrial tool steel, through hardened and tempered for long life. Chamfered tips for a perfect fit. Includes 1. 5mm, 2. 5mm, 4mm, 5mm, 2mm, 3mm, and 6mm hex wrenches. Multi-position composite handle is comfortable, slip-resistant, lightweight, and 40% stronger than steel handles.
BrandPark Tool #ad
ManufacturerPark Tool #ad
Height0.8 Inches
Length3.75 Inches
Weight0.23 Pounds
Width1.15 Inches
Part NumberAWS-10
ModelAWS-10

2. Park Tool

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4mm, 6mm, 5mm, Park Tool AWS-1 3-Way Bicycle Hex Wrench

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Park Tool #ad - Ergonomic Y-shaped 3-way design. 4mm, 5mm, and 6mm hex drivers. Chamfered tips for a perfect fit. Wrenches made from industrial tool steel, through hardened and tempered for long life.
BrandPark Tool #ad
ManufacturerPark Tool #ad
Height0.9 Inches
Length5 Inches
Weight0.21 Pounds
Width5.75 Inches
Part NumberAWS-1
ModelAWS-1

3. RuiLing

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RuiLing 1-Pack Y Shape Bike Hex Wrench Bicycle Cycling Torque Spanner Internal Hex Key Combination Repair Tools 3 Way Allen Wrench 4mm 5mm 6mm

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RuiLing #ad - High quality material: made of high grade carbon steel, anti-corrosion, sturdy and durable to use. Type: y shape bike internal Hex Wrench, practical and portable, perfect for outdoor cycling use. Use: a necessary tool for bicycle repairing or maintenance, building, perfect for bikes, furniture, tool projects, and more. Three models hex wrench, extensive use purposes, applicable to different requirements. Chrome plated surface, high hardness, anti-rust, large torque, long service life. Hex size: 4mm 5mm 6mm. Y-shape design: trident design easy to force, less effort and more efficient.
BrandRuiLing #ad
Part NumberY-ALLEN-I456
ModelY-ALLEN-I456

4. Park Tool

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6mm, 5mm, Park Tool AWS-8 3-Way Ball-End Hex Bicycle Wrench, 4mm

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Park Tool #ad - Wrenches made from industrial tool steel, through hardened and tempered for long life. 4mm, 5mm, and 6mm hex drivers. Ergonomic Y-shaped 3-way design. Ball end tips to access hard-to-reach fasteners.
BrandPark Tool #ad
ManufacturerPark Tool #ad
Height0.9 Inches
Length4.9 Inches
Weight0.2 Pounds
Width5.5 Inches
Part NumberAWS-8
ModelAWS-8

5. Park Tool

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5mm, T25, Park Tool AWS-9.2 Fold-Up Hex Wrench Set, 4mm, 6mm, Screwdriver

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Park Tool #ad - Includes 4mm, 5mm and 6mm hex wrenches, flat blade screwdriver, and T25 Torx-compatible driver. Multi-position composite handle is comfortable, lightweight, slip-resistant, and 40% stronger than steel handles. Wrenches made from industrial tool steel, through hardened and tempered for long life. Chamfered tips for a perfect fit.
BrandPark Tool #ad
ManufacturerPark Tool #ad
Height0.8 Inches
Length3.75 Inches
Weight0.25 Pounds
Width1.15 Inches
Part NumberAWS-9.2
ModelAWS-9.2

6. Xmomx

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Xmomx 3 Sets Three Way Triangle Allen Wrench Outer Spanner 2.5/3/4mm & 4/5/6mm Bike Bicycle Cycling Y-Type 8/9/10mm Socket Wrench Hex Repair Tool

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Xmomx #ad - Portable size and perfect to bring wherever you go. Size of y-type hex wrench: 2. 5/3/4mm hex size of y-type hex wrench: 4/5/6mm Hex Size of Y-Type Socket Wrench: 8/9/10mm. Recommended Use: home bicycle maintenance and outdoor cycling use. Package includes: 1 xy-type 3-way hex wrench of 2. 5/3/4mm+ 1 xy-type 3-way hex wrench of 4/5/6mm+ 1 x Y-Type 3-way Socket Wrench. Material: wrenches steel, handle plastic.
BrandXmomx #ad
ManufacturerXmomx #ad
Part NumberX-Y-BS-3set

7. TOBWOLF

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4mm T Handle Thumb Saver Allen Wrench, Inline Skate Hardware Accessories, TOBWOLF 16PCS 8mm Roller Skates Replacement Axles & Spacers

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TOBWOLF #ad - Please check the specifications in the second product image to ensure it match your specifications. Provide smooth motion-- with axle and spacer to fix the bearings better, which is helpful to reduce drag on your bearings and make the motion of bearing more smoothly, helping to prevent your bearings from collapsing.

It is very important to measure your wheel bearing dimension to ensure a proper fit. Sturdy construction-- aluminum alloy material make it sturdy and not easy to loosen, and it can provide the flexible rotation, durable for use. Compatibility & size-- axle diameter 8mm, wheel spacer inner diameter 8mm, sutiable for most saktes using 8mm axles.

Package included-- pack of 8pcs axles, 8pcs wheel spacers, 1pcs T Handle Allen wrench. These will get you out of a pinch when you can't find or replace your specific missing axles. Ergonomic handle takes pressure off thumbs when loosening or tightening. These roller skates replacement axles fit a good chunk of roller skates brand using aluminum frames. Easy to install-- with the 4mm t handle Allen Wrench for easy installation.
BrandTOBWOLF #ad
ManufacturerTOBWOLF #ad
Part NumberJ19203-TW-US

8. Park Tool

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Park Tool AWS-7 3-Way Hex/Torx-Compatible Wrench, 4mm, 5mm, T25

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Park Tool #ad - Ergonomic Y-shaped 3-way design. Wrenches made from industrial tool steel, through hardened and tempered for long life. Chamfered tips for a perfect fit. 4mm hex, 5mm hex and T25 Torx-compatible drivers.
BrandPark Tool #ad
ManufacturerPark Tool #ad
Height0.9 Inches
Length5 Inches
Weight0.18 Pounds
Width5.75 Inches
Part NumberAWS-7
ModelAWS-7

9. BIKE HAND

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BIKEHAND Heavy Duty Precise Bike Bicycle Twin Head Hex Allen Wrenches Set

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BIKE HAND #ad - Made in Taiwan. The hex wrench set includes 2mm, 3mm, 4mm, 2.5mm, 6mm, 8mm, 5mm, 10mm sizes. Warranty: Life time. Do not screw into unsupported or hollow wall. 2 screws mounted either on the wood table or wall stud if necessary. Ball-type hex wrench and the T-handles are ergonomically perfect for comfortable use.
BrandBIKE HAND #ad
ManufacturerBIKE HAND #ad
Height4.72 Inches
Length9.45 Inches
Weight3.31 Pounds
Width9.06 Inches
Part NumberYC-20