The surface is of painted and full grinding processing with anti-rust treatment which is smooth to drill.
Single threaded U-type chip discharge groove make it smoother to drill.
The design of triangular handle make it more fastening to clamp and not easy to slip.
Material: Hard Alloy
Tool Holder Type: Triangle Handle
Cooling Type: Outer Cold
Blade Top Corner: 45°
Category: Hole expansion drill
Handle Diameter: 2.5-9mm
Chip Groove Length: 40-75mm
Blade Diameter: 3-12mm
Blade Length: 80-120mm
Uses: Widely used in ceramic tile, glass, brick wall, wood, etc.
Can be used in the hand electric drill, table drill, etc.