4 Pcs Titanium Coated Countersink Chamfer Tool Deburring Tool Set Metal Wood Drill Bits Set

Product Description OCGIG 4pcs Titanium Coated Countersink Chamfer Tool Deburring Tool Set Metal Wood Drill Bits Product Details This 90° Titanium Coated chamfer tool is convenient for chips to get out and prevent metal chips from splashing and round shanks. Size(hole chamfer size x length) 2-5mm(2-5 mm x 45 mm)；5-10mm(5-10 mm x 47 mm) 10-15mm(10-15 mm x 62 mm)；15-20mm(15mm-20 mm x 82 mm) Wide Range of Applications Suitable for hardness under 25 artifacts,like the thin board, such as wood, PVC board, aluminium sheet, insulating plate or thin plastic sheet, etc. First Step:Pilot Hole First drill the hole in wood or plastic to locate or guide a screw and expand the size according to the tap. Without a pilot hole, the screw may get too tight and either broke the material or snap the screw completely. Second Step:Install the chamfer tool Install the chamfer drill on the bench drill. If you need to chamfer 16mm hole, you can choose 15-20mm chamfering device. Add water or cutting oil to cool when chamfering. Third Step:Clearance Hole Finally screw on until flush with the horizontal. This bits should use the bench drill , it is easy to shake and it will affect the chamfering effect if you use the hand drill.