HSS Hole Saw Drill Bits 12-80mm Set Stainless Steel Metal, Wood Cutter Hole Saw Features: Material: HSS 4241（high speed steel） Size ：12mm-80mm Shank ：Triangular handle (Collets above 10mm can be used) High-speed hole saw drill bit，Stronger and durable hole saw cutter It is used for punching stainless steel, installing guard rails, opening cat eyes on door panels, opening water heater pipes, and punching aluminum gusset plates
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