Superabrasive's anchor bits are the perfect bits for securing countertops and undermount sinks. They are available in various sizes, and will drill approximately 50 holes.
The HERCULES® Pneumatic Anchor System is a lightweight, simple to operate anchor system for drilling anchor channels into the back of the stone countertops. It produces a very precise channel for anchor bolts in 40 seconds and guarantees a secure undermount sink installation. HERCULES® Pneumatic Anchor System works with the same precision on all types of stone, natural and engineered.