Bi-metal hole saw 40 mm

Bi-metal Hole Saw 40 mm, height 44 mm, drilling depth: 38 mm, application: metal, steel/Inox, cast iron, brass, aluminum, wood, thread: 5/8” x 18 UNF, made of HSS high-speed steel, for use with 56T754 Adapter with pilot drill for bi-metal hole saws 32-152 mm, Hex, diameter: 40 mm, max rotational speed: steel: 220 rpm, stainless steel: 110 rpm, aluminum: 330 rpm, wood: 290 rpm, cast iron: 145 rpm, brass: 290 rpm