This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, cer
Materials and only needs water for lubrication;Can be used with a standard electric drill.
Always use lubrication (water), otherwise the diamond core drill will burn.
Start your hole diagonally, make a round trace and then hold drill straight.
Size: 6mm/0.23', 8mm/0.31', 10mm/0.39', 12mm/0.47', 14mm/0.55', 16mm/0.62', 18mm/0.7', 20mm/0.78', 2

Technical Details

Size (LWH): 4.1 inches, 3 inches, 1.6 inches
Product Details
Product Dimensions: 4.1 x 3 x 1.6 inches
Shipping Weight: 0.4 pounds (View shipping rates and policies)
ASIN : B00TF4D1AI