Concave drill bit

The concave drill bit is suitable for drilling construction in various fields such as coal mines and geology. The concave blade wing structure design has high stability, fast speed, and simple processing, especially in soft rock formations, with extremely high cost-effectiveness.

Feature: Suitable for homogeneous soft rocks with f<8

Performance Performance

Speed: ☆☆☆☆☆

Lifespan: ☆☆☆

Common specifications: 75, 94, 113, 133, 153