Stoppers allow for secure drilling to a desired depth.
Insert the hammer holder and drive without removing the bit from the hammer drill.
The edge of the blade is made of 3 deltagon blades, allowing for drilling close to a real circle, and the anchor insert is smooth and easy to locate.
If the O-ring is worn, we include a spare O-ring to replace it.
For drilling and punching internal cone-stamped anchors on concrete, mortar, and deck plates