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 |
More Detail: