Park tool tap 8 frame tap water bottle 5x08mm frame taps will become a lifesaver at some time for virtually every mechanic as with all park tool taps these are made of high carbon steel and are precision ground park tool frame taps cut easily and fit conventional tap handles for water bottle toe clip fender and rack bosses part of a range of taps to cover all normal needs on a bike made of high carbon steel precision ground and hardened for cleaning out and repairing threads