The Last Resort to Save a Rusty Bolt - This splitter features a drop-forged body and hardened cutter. Splits nuts from 7/16in. thru 3/4in. and features a rotating cutter head and offset handle to fit tight quarters. Imported. One-year manufacturer's warranty. The (43455) Nut Splitter removes nuts from 9/16in. to 1-1/8in.. Not for use on Hardened or Heat Treate Nuts. Wear Safety Goggles.