Tork Craft Square Recess Bit 1 1 X 25mm

The diamond core bit is used to drill holes in: •Ceramic tiles •Marble •Grade 5 porcelain (hardest) •Granite •Glass •Slate The diamond core cuts faster, smoother, and lasts longer than any other core drills. The drill guide is held in position with a suction cup. It works very well when drilling into tiles. The underside of the drill guide is covered with foam to hold water when drilling on flat surfaces.

This set can be used for pre-drilling and countersinking and tighten screws