Economy priced hand tool set. Hardened steel chisel driven by a large steel screw. Tighten screw until nut splits. Use for work on shocks, mufflers, and tailpipes. Do not use on heat-treated nuts. Contains 1 nut splitter to split nuts 1/2" to 5/8" and 1 to split nuts 5/8" to 7/8". Carded.