Square Hole Drill Bit Set Woodworking HSS Router Drill Wood Drill Bit Set Drill Bit Set with Adaptor 0.8 cm 8 mm 1 cm - ShopVlot

Precise drilling holes with low pressure: With different specifications of the square drill, suitable for the correct performance of the square drill, you can drill a square hole to meet the requirements: 6.4mm(1/4 inch), 8mm(5/16 inch), 9.5mm(3/8 inch), 11mm(7/16 inch), 12.7mm(1/2"), 14 inch). mm(9/9): 16mm, 16mm High performance and labor saving: square tip with standard chips design, easy to remove wood chips on the side, improves drilling efficiency. Reduces the labor intensity of constructi