4pcs Square Hole Drill Bits Woodworking Auger Mortising Chisel Set Kit 1/4 to 1/2 Inch Tool Set For Cheap

Description

4pcs Square Hole Drill Bits Woodworking Auger Mortising Chisel Set Kit 1/4 to 1/2 Inch Tool Set
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