DIAMOND DRILL BIT_K-3300
Material: 45# Carbon Steel
Surface: Black Coating+Polishing
Diameter: 7mm
Total Length: 98mm
Work Length: 70mm
Hardness: 30-45HRC
Material: 45# Carbon Steel
Surface: Black Coating+Polishing
Diameter: 7mm
Total Length: 98mm
Work Length: 70mm
Hardness: 30-45HRC