Hinge drill series

Three-edged hinge drill

Three-edged hinge drill

H3F

Integral head three-edged hinge drill

Integral head three-edged hinge drill

CH3F Patented structure design, hole drilling processing is easy and laborious, and the hole wall is smooth and not burned

Hinge drills

Hinge drills

H It can increase the chip breaking groove, increase the chip space, and discharge the chip smoothly and difficult to burn

Integral head hinge drill

Integral head hinge drill

CH The overall structure design, the hole drilling processing is easy and laborious, and the hole wall is smooth and does not burn paste