Bi-metal hole saws:
(x1) 3/8" Hex HSS adaptor Ø22-35mm
(x1) 7/16" Hex HSS adaptor Ø44-64mm
(x1) Hex key for replacing pilot drill bit
(x1) Adaptor 1/2-20UNF - 5/8-18UNF
The Bi-metal hole saw's fast cutting power lies behind its HSS (hi-speed steel) manufactured teeth.
The teeth have been set to a variable pitch to improve harmonic vibration and to have a better chip clearance.
The hole saw can be used to cut into:
Mild steel (sheet metal)
Stainless steel (sheet metal)
Drywall (plaster board)