Common specifications: φ28, φ30, φ32, φ34, φ36, φ42, φ45, φ50, etc. Other specifications and special requirements can be customized according to specific demands.

The cutting teeth of the bolt drill bit come in three types: alloy, flat - piece composite, and ball - piece composite. The flat - piece composite cutting teeth are suitable for hard and relatively intact formations and feature a high penetration rate. The ball - piece composite cutting teeth are suitable for broken and complex formations, with strong impact resistance and are not prone to chipping. Alloy cutting teeth are suitable for softer formations and are inexpensive.