Park Tool Frame Tap

This 3mm x 0.5mm tap is specifically sized for rear wheel dropout alignment screws. It is intended to clean out or repair the threads in those small, often overlooked mounting holes.

No, you don't need a proprietary tool. This tap is designed to fit standard tap handles that you likely already have in your workshop or can easily source at any hardware store.

This tool is primarily designed for chasing or repairing existing threads that have become damaged or seized. While it is made of high-carbon steel, it is not intended for machining new threads into unthreaded material.

You should verify the thread pitch and diameter of your dropout screw before purchasing. This tap is strictly for 3mm diameter holes with a 0.5mm thread pitch, which is a common standard for dropout adjustment screws but not universal.

Yes. It is precision-ground from high-carbon steel and hardened to maintain its cutting edge. It is built to the same professional standards Park Tool uses for all their shop-grade equipment.