Hand Tools

Square Hole Drill Bit Sets with HSS Square Hole Drill Bit Adapter for Mortising Machines and Drill Press Attachments (6.4/8/9.5/11/12.7) PREMIUM QUALITY MATERIAL: The square hole drill bit mounting bracket and square mortise chisel bit are made of cast HSS for durability. If you are looking for a versatile and efficient way to quickly install or remove drill accessories, then this... Square Hole Drill Bit Sets with HSS Square Hole Drill Bit Adapter for Mortising Machines and Drill Press Attachments (6.4/8/9.5/11/12.7)