Park Tool 2.5mm THH-25 adjustable hex key

Park Tool ’s THH-25 Allen key is a professional T-handle tool designed for quick and efficient work on the 2.5 mm hex screws found on road bikes. Its design offers excellent leverage and a perfect fit within the screw heads, ensuring precise tightening and loosening both in the workshop and on the go.

Manufactured from a carefully selected combinationof chrome-vanadium and S-2 tool steels, this spanner features the ‘Speed Spinner’ system: an anodised aluminium tip that allows screws of varying lengths to be tightened and loosened quickly, without any extra effort. The machined and bevelled tips facilitate insertion into hex screws, even in confined spaces.

The integrated ‘Strip-Gripper’ system (a twisted hex) allows you to easily remove screws with damaged or oversized hex sockets – a valuable feature for repairing a bike in any situation. The sliding T-handle offers multiple grip positions and increased leverage, ideal for jobs requiring torque.

Technical specifications:

- Brand: Park Tool
- Tool type: T-handle Allen key (hexagonal)
- Size: 2.5 mm
- Material: Chrome-vanadium steel and S-2
- Weight: 40 g
- Working range: Universal