This diamond-impregnated core-style bit is engineered for superior longevity and precision on both flat and contoured surfaces. The 360-degree diamond grit allows for rasping to enlarge holes, while integrated side holes facilitate efficient dust removal during use.

• Precision drilling on both flat and contoured glass surfaces
• Diamond-impregnated core design ensures extended tool life
• 360-degree diamond grit allows for rasping to enlarge existing holes
• Integrated side holes enable efficient removal of glass dust during operation
• Versatile application for glass blocks, bottles, ceramic wall tile, and jewelry
• Includes one 662DR 1/8 in. glass drilling bit and instructions