General description The CSPARKV 20mm Square Hole Mortise Chisel Drill Bit is designed for efficient square hole drilling in various wood products. Its innovative drill sleeve design minimizes cracking during use, while the universal handle shape ensures stable clamping. This drill bit is ideal for use with mortising machines and square hole drilling machines, making it a versatile tool for woodworking enthusiasts. Technical specifications Diameter: 20mm Material: Bearing steel Design: Long U-shaped flute for efficient chip removal Heat treated for enhanced durability Usage Compatible with electric drills, hammers, and mortising machines Suitable for drilling square holes in MDF, particle board, and wood products