Bi-metal hole saw 27 mm

Bi-metal hole saw 27 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: 27 mm, max. rotational speed: steel: 325 rpm, stainless steel: 160 rpm, aluminum: 480 rpm, wood: 430 rpm, cast iron: 215 rpm, brass: 435 rpm.