Features Overall Heat Treatment: Made of alloy steel section, the overall heat treatment brings high hardness and a long service life for durability. Convenient Wood Chips Discharge: U-shaped long chip flute design aids in the efficient discharge of wood chips, enhancing drilling efficiency. Bursting defence: The cutting edge force is on the same plane, providing effective defence to avoid bursting during initial use, ensuring stability. Compatible Design: Circular drill tail design allows for stable clamping, suitable for use with square hole drills and square tenon machines. Versatile Wood Drilling: Suitable for drilling various wood products including density board, medium fiber board, particle board, and wood. Features: 1、OVERALL HEAT TREATMENT: The drill bit is made of alloy steel section, the overall heat treatment bring high hardness and long service life 2、CONVENIENT FOR WOOD CHIPS DISCHARGE: U shaped long chip flute design is convenient for the discharge of wood chips and improves drilling efficiency 3、AVOID BURSTING: The force of the cutting edge of the drill bit is on the same plane, and the effective defence can avoid the situation of bursting at the beginning of use, very stable 4、USE WITH SQUARE HOLE DRILLS: The drill tail adopts a circular design, which makes the clamping more stable. Can be used with square hole drills and square tenon machines 5、FOR WOOD PRODUCTS: Suitable for drilling wood products such as density board, medium fiber board, particle board, wood and so on Specification: Item Type: Square Hole Mortiser Drill Bit Material: Bearing steel + alloy steel Uses: Suitable for wood products such as density board, medium fiber board, particle board, wood, etc. Suitable for square hole drills and square tenon machines Shank Type: Round shank Package List: 1 x Square Hole Mortiser Drill Bit 1 x Drill Note: Please bring protective gear when drilling to prevent the debris from splashing and hurting yourself. Package List 1 x Square Hole Mortiser Drill Bit 1 x Drill core