Makita's bi-metal hole saws have a vari-pitch tooth configuration and are recommended for cutting steel, aluminium, copper, brass and plastic. This set is designed with electricians in mind and comprises 6 hole saws and 2 arbors along with a plastic case for storage and transport. Features and Benefits • Sizes carefully selected with the professional electrician in mind • Variable tooth pitch configuration • Fast cutting and long life • Ideal for cutting steel, aluminium, copper, brass and plastic • Includes plastic carry case Contents • 20mm Hole Saw • 25mm Hole Saw • 32mm Hole Saw • 40mm Hole Saw • 51mm Hole Saw • 65mm Hole Saw • Arbors (x2) • Plastic Carry Case