16-53mm Hole Opener Drill Bit Sets Hole Saw Carbide Cutter Drill Bit 10PC Set For Steel /Metal Plate /Iron Plate/ Aluminum Alloy

16-53mm Hole Opener Drill Bit Sets Hole Saw Carbide Cutter Drill Bit 10PC Set For Steel /Metal Plate /Iron Plate/ Aluminum Alloy Specification Name: 10-piece set 16-53mm alloy hole opener Specification: 16/18/20/22/25/30/35/45/50/53mm Material: Carbide Cooling type: external cooling Uses: can be used for stainless steel, thick cast iron, thick steel plate,aluminum alloy, and various non-standard metals. 1. The feed is stable, the workpiece is compressed, and the speed should not be too fast 2. Add water when opening holes Package List: 16-53mm Hole Opener Drill Bit Sets x 1