General description The 4pcs Deburring Countersink set is designed for clean and precise countersinking, chamfering, or beveling of round holes in various workpieces. Made from high-quality rustproof HSS material, these tools feature smooth cutting edges that eliminate chatter and serrated edges, ensuring superior efficiency in both domestic and industrial operations. Technical specifications Material: HSS (High-Speed Steel) Included sizes: 2-5mm, 5-10mm, 10-15mm, 15-20mm Tip angle: 90° Usage Suitable for cutting plywood, wood, acrylic, PVC board, plastic, and metal. Keep the drill cool between drilling holes to maintain performance. Designed for use with a bench drill; not compatible with electric hand drills. Other information Included in the package: 4 HSS countersink drill bits for deburring, metalworking, and non-metallic cutting.