Bi-metal hole saw 51 mm

Bi-metal hole saw 51 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 high-speed steel HSS, for use with 56T754 Adapter with pilot drill for bi-metal hole saws 32-152 mm, Hex, diameter: 51 mm, max. rotational speed: steel: 170 rpm, stainless steel: 85 rpm, aluminum: 255 rpm, wood: 200 rpm, cast iron: 115 rpm, brass: 230 rpm.