MEMKEY 4-Piece Chisel Set, Square Hole Drill, Steel Gouge, Woodworking Tool Set (1/4 - 1/2 - 5/16 - 3/8 Inch)

General description Professional design, ideal for drilling square holes in wood with a mortiser. Square hole drills are mainly used in woodworking, making them perfect for construction, renovation, and decoration fields. This 4-piece chisel set reduces the labor intensity of construction workers while accelerating working speed and reducing costs. Technical specifications Material: High speed steel Heat treatment hardness: HRC48~50 Sizes: 1/4 inch (6.35 mm), 5/16 inch (7.94 mm), 3/8 inch (9.5 mm), 1/2 inch (12.7 mm) Compatibility and accessories Fits all machines and drill bits Package includes: 1 piece 1/4" (6.35 mm), 1 piece 5/16" (7.94 mm), 1 piece 3/8" (9.5 mm), 1 piece 1/2 inch (12.7 mm) Note: The punch square must be made with a drill, hammer, or other tools (none of these items are included)