- SIZE INTRODUCTION:The total length is 18 inches, the actual effective length is 16 inches.
- Alloy Cutter Head: The harder cross cutter is easier and more efficient for drilling work.
- Material: High-strength alloy steel is made by Wensilon, very hard.
- Ripple design: double line of drill bit design, drilling and punching is faster, stone powder is easier to peel off from the wall.
- Compatible with most brands of impact drills on the market