Park Tool PH-2.5 Hex Key, 2.5 mm, Blue

Park Tool PH-2.5 Hex Key – Compact 2.5 mm Inbus for Precision Bike Repairs

The Park Tool PH-2.5 is a dedicated hex key designed for 2.5 mm hex bolts commonly found on bicycles. Its compact L-shape provides leverage in tight spaces where standard wrenches cannot reach.

• 2.5 mm hex bit fits precision fasteners on derailleurs, brakes, and cranksets
• Blue colour coding enables quick visual identification in a crowded tool roll
• L-shape design delivers torque in confined frame and component spaces
• Lightweight at 40 g — adds negligible weight to any bike tool kit

What sets the PH-2.5 apart

Unlike generic hex keys, the PH-2.5 is purpose-built for bicycle maintenance with a slim profile that slides into recessed bolt heads without stripping. Park Tool manufactures this tool to the same quality standards as their full professional bike workshop line.

Ideal for

Home cyclists who maintain their own bikes and need a reliable 2.5 mm hex key for regular adjustments. Also suited for bike shop benches where a complete set of Park Tool hex keys is kept within arm's reach.

Application of Park Tool PH-2.5

1. Identify the 2.5 mm hex bolt on the component requiring adjustment
2. Insert the PH-2.5 bit into the bolt head, ensuring full seating
3. Turn clockwise to tighten or counter-clockwise to loosen
4. Store the tool in a tool roll or case to protect the hex tip from damage