1 X M373 Splitproof Bevel Edge Wood Chisel 25mm (1in). The IRWIN Marples M373 splitproof bevel edge wood chisels are ideal for heavy-duty use and have splitproof handles. They are made from best in category steel for improved sharpness and edge retention. The blade, bolster and tang are forged from one piece of steel with edges bevelled to enable easier working in tight corners and they are fitted with two-tone splitproof plastic handles which will withstand heavy usage. The handle is also contoured to provide added control.