This is no namby-pamby little tool. Powerhouse designed their Pro Piston Knocker for serious real world duty. The Pro Piston Knocker is constructed of a non-marring composite material and measures a full 13" in length
with 2"and 2 1/2" diameter ends. The 2 pound overall weight is achieved through the use of a chamber loaded with steel shot, which provides a dead blow effect; heavy striking force without rebound. We’re sure you’ll
find more uses for this handy driver than just knocking pistons into their holes. 