Set of 15 Diamond Drill Bits, Hole Saws for Carbon Steel, Drilling Glass, Ceramic, Porcelain, Tile, Marble, 6/8/10/12/14/16/18/20/22/25/28/30/35/40/50 mm

Product Description: EASY TO USE. The center pilot points are designed for wood, metal, etc. Here's how you can keep the drill bit on target: a- You can create your own guide from plywood, plastic, or even cardboard.Simply hold the drill bit in place until it makes the initial marks. b- You can start drilling at an angle, with the edge of the drill bit forming a C-shaped groove, then bringing the drill bit vertically. c- You can manually guide the bit with a damp sponge. Applicable industries: Suitable for processing stone, tile, ceramic, glass, granite, etc. Package includes: 1 * set of diamond drill bits. Material: Iron, diamond-plated head. Color: Silver. Quantity: 15 pieces. TIPPS: The galvanized diamond coating will wear off if the tool overheats.Never let the drill bit dry out. Here's how to use water to cool the tool: a- You can build a mini water dam around the hole with plumber's grout. b- You can choose to spray water on the tip. c- Or you can use running water to cool the bit. Steps: Start drilling from the opposite corner, trace a circular path with a C-shaped notch, then slowly hold the drill straight.If you smell burning, stop!Marble, jade, bone, and other non-metals; Glass, tile, marble, granite, ceramic; Jade, stone stele, wood; Wood, plastic. How to use: Drilling; Engraving, flashing, deburring, and other treatments; Drilling holes, available in 10 sizes; Carving or peeling; Engraving, hollowing, grooving, polishing. Quantity: 7 pcs; 10 pcs; 10 pcs; 20 pcs; 20 pcs