Lisle Valve Lappers

Lisle's Valve Lappers are designed for hand lapping a valve and come in a large and small size. Lapping is important for checking to see if a valve has an air-tight fit before installation. For double checking the mating surface of a valve, Lisle delivers these quality valve lappers to get the job done. The unique locking tabs positively secure the cups to the sturdy handles which eliminate any slippage.