Bi-metal hole saw 30 mm

Bi-metal hole saw 30 mm, height 51 mm, drilling depth: 38 mm, application: metal, steel/Inox, cast iron, brass, aluminum, wood, thread: 1/2” x 20 UNF, made of high-speed steel HSS, for use with 56T753 Adapter with pilot drill for bi-metal hole saws 14-30 mm, Hex, diameter: 30 mm, max. rotational speed: steel: 285 rpm, stainless steel: 145 rpm, aluminum: 425 rpm, wood: 410 rpm, cast iron: 190 rpm, brass: 380 rpm.