Chrome plated zinc head except tho720 12 720n which has a cast iron head with two screw in nylon faces which are designed to be replaced when worn tho708 tho720 tho710r and tho712r are fitted with wooden handles while tho710 tho712 tho714 and tho716 have plastic handles all have two white nylon faces except tho710r and tho712r which have one white nylon and one soft grey face available in 6 different weights used as a multi purpose striking tool in most assembly applications including engineerin