This three piece set includes a thick vulcanized firm rubber base which absorbs shock plus a solid steel block which is 15/16" (24mm) thick and 3" (75mm) in diameter. The third piece is a sturdy nylon block the same size that fits into the rubber base for lighter more delicate work. This is a well made set and allows one to hammer without creating excess noise and vibration at the bench.
WARNING: Cancer and Reproductive
Harm - www.P65Warnings.ca.gov