Blake Dog Professional Trapper's Hammer. This hammer was designed by trappers and engineers for efficiency and comfort to the trapper. 18 5/8" long and over 3.5 lbs., this hammer is backed by a lifetime warranty. Chisel is T-1 steel 90,000 PSI yield strength. Hammer head is C &C machined from 1018 cold rolled round steel PSI strength 57700.