Bi-metal hole saw 70 mm

The 70 mm bi-metal hole saw 56T717 by GRAPHITE, with a height of 44 mm, allows drilling to a depth of 38 mm. It is made from HSS high speed steel and is fitted with a 5/8'' x 18 UNF thread. It is designed to work in metal, stainless steel (Inox), cast iron, brass, aluminium and wood. The GRAPHITE hole saw is recommended to be used with the 56T754 adapter with pilot drill bit for bi-metal holesaws in the 32-152 mm range. Maximum speeds for this tool, vary depending on the material: steel - 125 rpm, Inox steel - 60 rpm, aluminium - 185 rpm, wood - 160 rpm, cast iron - 80 rpm, brass - 160 rpm. The bi-metal hole saw is designed for use with a drill or drill/driver.