Reasonable Collocation: Four commonly used square hole drill bit and one heavy positioning center punch, which are high hardness and long service life.
Practical Size: The square drill bit diameters for 1/4 inch (6.4mm), 5/16 inch (8mm), 3/8 inch (9.5mm) and 1/2 inch (12.7mm)
Professional Production: The steel hardness sharp mortise drill bit set is well-manufactured, burr-free, provide a smooth and precise drilling experience.
High Work Efficiency: The hollow chisel mortise drill tool has a U-shaped design to facilitate the discharge of wood chips and improve the drilling efficiency, you can quickly obtain different mortises and save manpower.
Widely application: It is suitable for tenoning wood, including high-density fiberboard, medium-density fiberboard, particleboard, pine, basswood etc. Not suit for processing metal, plastic, concrete, glass and gypsum board.
Things Need to Note: The square wood chisel need to be used in conjunction with the mortise machine. Not compatible with hand held drill.