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 - Model: ST22005877
 - SKU: ST22005877
 
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:
















