Drive your pipe with these drivers and never destroy the top of the pipe again. Because the driver fits inside the pipe, the lip is never hit by the hammer so the top of the pipe stays round, making it easy to put the PERMAMARK cap (#3000,4000, 5000, and 6000) into or over the pipe. One driver fits into 1/2" ID pipe, the second one fits 3/4" and 1" ID pipe, while the other fits into 1 1/2", 1 3/4", and 2" ID pipe.
Made of harden 4140 steel so they won't splinter. The drivers are approx. 4" long and weigh 1/2 lb. and 1 1/2 lb.