Features:
- [High-speed Steel Construction]: Made of heat-treated high speed steel with HRC48-50 high hardness, strong and durable. Clamping shank diameter: 19mm (Round), Radial drill sleet reduced resistance.
- [Standard Chip Flute Design]: Easy to exclude side sawdust, improvedrilling efficiency.
- [High Sharpness Blades]: Reduce labor intensity and speed upconstruction speed.
- [Versatile Uses]: Great for drilling square holes in wood with mortise and tenon machine.
Specification:
Material High speed steel
Hardness HRC 48-50
Clamping shank diameter 19mm (Round)
Length 210mm
Size 1/4inch (6.35mm), 5/16inch (7.94mm), 3/8inch (9.5mm), 1/2inch (12.7mm)
Color Silver
Great for Drilling square holes in wood with mortise and tenon machine
Produce Included:
1 Pc x 1/4inch (6.35mm) square hole drill bit
1 Pc x 5/16inch (7.94mm) square hole drill bit
1 Pc x 3/8inch (9.5mm) square hole drill bit
1 Pc x 1/2inch (12.7mm) square hole drill bit