10pcs 10mm50mm Diamond Hole Drill Bit Set Tile Ceramic Glass Porcelain Marble Hole

Features:
--100% and high quality.
--Can be used with a standard electric drill.
--Always use lubrication (water), otherwise the diamond core drill will burn.
--Materials and needs water for lubrication.
--This diamond coated core drill bit removes a complete circle from glass, marble, tiles,granite, ceramic or .

Specifications:
Size: 10mm/0.39",14mm/0.55", 16mm/0.62", 18mm/0.7",20mm/0.79",26mm/1.02", 32mm/1.26",38mm/1.50",45mm/1.77",50mm/1.97"
Material: steel

Use note:
Start your hole diagonally, make a round trace and then hold drill straight.










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