Park Tool TAP-6 Taps

Bicycle pedals are threaded differently on each side to prevent them from loosening while riding. The right pedal uses a standard right-hand thread, while the left pedal uses a reverse left-hand thread, so you need both taps to service a full crankset.

These taps are designed specifically for standard 9/16" x 20 TPI pedal threads, which covers the vast majority of modern adult bicycles. They are not compatible with smaller 1/2" threads found on some children's bikes or vintage one-piece cranks.

Yes, you will need a tap handle or an adjustable wrench to turn the taps. It is also highly recommended to use a high-quality cutting fluid or tapping oil to ensure smooth thread cutting and to prevent the metal from galling.

It is designed for both. While they are excellent for chasing and cleaning out damaged or dirty threads, they are also sharp enough to cut new threads if the original ones have been stripped, provided there is enough material left in the crankarm.

If the threads are completely stripped away or if the crankarm material is cracked or significantly thinned, the tap may not have enough metal to bite into. In those cases, it is safer to replace the crankarm entirely rather than attempting a repair.