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9 Pc Bi-metal hole saw set. Included in the set: Bi-metal hole saws: (x1) ø19mm. (x1) ø22mm. (x1) ø29mm. (x1) ø38mm. (x1) ø44mm. (x1) ø57mm. Adaptors: (x1) 3/8' Hex HSS adaptor ø19-29mm. (x1) 7/16' Hex HSS adaptor ø38-57mm. (x1) Hex key for replacing pilot drill bit. (x1) Adaptor 1/2-20UNF - 5/8-18UNF. INFO: The set includes a storage case for transport. Application: 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: Aluminium. Copper. Mild steel (sheet metal). Stainless steel (sheet metal). Zinc. Wood. Drywall (plaster board). PVC. The Bi-metal hole saws are primarily used by electricians, plumbers,. machinists and carpenters. Features: Low vibration and even cut due to the variable pitched teeth. Strong electron beam welded cup design with a tough alloy body for added. durability. Knock out hole for plug removal. Depth of cut: 38mm. Long life - when used properly within the correct rpm and using a. lubricant when cutting into metals. Lubricant tip: Use paraffin or beeswax when cutting into aluminium. Use. CT-90. or a general-purpose lubricating oil when cutting into steel.
