What bicycle parts use a 10mm hex key?

10mm hex keys are used on through-axles (most common use), SRAM DUB bottom bracket caps, some Shimano bottom bracket lockrings, and certain headset top caps. It is a common gap in standard cyclist toolkits.

Why buy a dedicated 10mm key instead of a multi-key set?

Because most multi-key sets stop at 8mm. A dedicated 10mm key with a 200mm arm also gives you far more leverage than a folding multi-key, which is important for through-axle tightening and bottom bracket installation.

IceToolz

Icetoolz 10x200mm Hex Key Wrench

Name: Icetoolz 10x200mm Hex Key Wrench
Brand: IceToolz
SKU: CMB_EAS_4718152353115
Price: 450.00 INR
Availability: InStock
Author: InstaSport Editorial

₹450.00

Description

The IceToolz 10x200mm Hex Key Wrench is a single long-arm hex key designed for 10mm hex fasteners — a size commonly found on bottom brackets, through-axles, and large cassette lockrings on modern bicycles. The 200mm arm length provides the mechanical advantage needed to apply appropriate torque with