10Pcs Marble Drill Bit 6-30mm Diamond Coated Hole Saw Core Drill Bit for Tile Glass Slate Marble NO5301

Features:

100% brand new and high quality.

Can be used with a standard electric drill.

Always use lubrication (water), otherwise the diamond core drill will burn.

Materials and only needs water for lubrication.

This diamond coated core drill bit removes a complete circle from glass, marble, tiles,granite, ceramic or other.

Specifications:

Size: 6mm/0.23\", 8mm/0.31\", 10mm/0.39\", 12mm/0.47\", 15mm/0.59\", 16mm/0.62\", 18mm/0.7\", 20mm/0.79,22mm/0.86\",30mm/1.18\"

Material: steel

Use note:

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

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