Features Overall Heat Treatment: Crafted from high-quality alloy steel, this drill bit undergoes overall heat treatment for enhanced hardness and extended service life Efficient Wood Chip Discharge: The U-shaped long chip flute design facilitates easy wood chip removal, significantly improving your drilling efficiency Burst Prevention Technology: The cutting edge's alignment on the same plane ensures effective protection against bursting, providing stability during initial use Stable Clamping Design: Featuring a circular drill tail, this tool ensures a secure fit when used with square hole drills and square tenon machines Versatile Woodworking Use: Perfectly suited for various wood products including density board, medium fiber board, and particle board, making it an essential addition to your toolkit Features: 1、OVERALL HEAT TREATMENT: The drill bit is made of alloy steel section, the overall heat treatment bring high hardn 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 protection 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 core 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