Pro Grade HSS Mortising Drill Bit Set For Woodworking, Square Hole Mortise Chisel Bits, Six Sizes From 1/4 Inch To 5/8 Inch, Includes 1/4, 5/16, 3/8, 1/2, 9/16, 5/8 Inch, Built Tough For Clean Mortises

Six-Piece HSS Mortise Drill Bit Set for Square Holes
✔️ Sizes: 1/4, 5/16, 3/8, 1/2, 9/16, 5/8 inches; HSS mortise bits

These square-hole mortising drill bits are designed for woodworking projects requiring precise square holes, typically used with mortising machines or jigs in cabinetmaking and furniture work.

✅ Material: High-speed steel (HSS)
✅ Hardness: HRC 48-50
✅ Holder diameter: 19mm (circular)
✅ Drilling core length: 200mm
✅ Slotting flute diameters: 1/4 in (6.4 mm), 5/16 in (8 mm), 3/8 in (9.5 mm), 1/2 in (12.7 mm), 9/16 in (14 mm), 5/8 in (16 mm)
✅ Package: 6 pcs included: 1/4, 5/16, 3/8, 1/2, 9/16, 5/8 inches
✅ Note: Requires compatible square hole mortising machine; not for standard electric or bench drills.

💡 What is a square hole mortise drill bit used for in woodworking and how does it work? This handy tool creates square mortises for joints in cabinetry and furniture projects.
- square hole mortise drill bit used with a dedicated mortising machine or jig for precise, square holes
- high-speed steel construction with hardness of HRC 48-50 offers good wear resistance
- requires proper setup and power matching to achieve clean, accurate cuts