[16mjm]
[35mm]
Specification:
Size:16mm / 0.6in,35mm / 1.4in(Optional)
Weight: 37 g-85 / 1.3-3 oz(approx.)
Note:
1. The hole opener is installed on the electric drill. Since this kind of hole opener does not have a center positioning bit, please operate it carefully and pay attention to safety
2.Speed cant be too fast, keep slow speed
3. Keep adding water for cooling. Dry drilling is strictly prohibited, otherwise high temperature friction will affect the use effect