12mm Diamond Drill Bits Hole Saws for Glass, Tile, Porcelain, Marble, Ceramic - Pack of 10 - Perfect for DIY Projects, Home Renovation & Crafting Bottles, Pots & Bricks

Information Diamond processing types on drill bits include sintering, electric plating or brazing. Electroplated and brazed diamond is surface coated, attached to the surface of the cutting edge. The cutting edge is instantly aging when the diamond breaks off. Sintered diamond cutting edge contains diamond particles from inside to outside, to ensure that the edge is always sharp. Sintered diamond has the sharpening property but electroplated or brazed diamond can not be sharpened. Diamond Drill Bits Smooth and exact finish for lowering incision resistance and drill pressure, increasing the sharpness, and effectiveness of water lubrication. Long Service life Nickel plating on the bits for good resistance to corrosion, can maximize tool’s life. Excellent for making holes on glass or ceramic. Clearance Hole Diamond drill bits with clearance hole facilitate the entrance of cooling water and escape of chips and other particles from drilling. Makes drilling process easier. Tips Start your hole diagonally, make a round trace and then hold drill straight. Please always use lubrication (water) when drill bits are working. Low drill pressure and increased use of water lubrication will extend drill bit life. Not suited for use on concrete or for depths beyond about 1/2 inch. Wide Applications Widely used for cutting accurate holes on glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, light stone and fiberglass. Not suitable for drilling tempered glass, plastic and wood. Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bits life. Works better with a electric drill (Not included here). Before the hole is opened, the diamond drill bit is adjusted without jumping, the hole should be entered smoothly, and no side pressure is applied. Pay attention to wearing equipment during operation. 10mm Diamond Drill Bits 18mm Diamond Drill Bits 30mm Diamond Drill Bits 10mm Diamond Drill Bits 20mm Diamond Drill Bits 4mm-50mm Diamond Drill Bits Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Customer Reviews 4.0 out of 5 stars 121 4.5 out of 5 stars 27 3.6 out of 5 stars 12 — 4.2 out of 5 stars 7 — Price $7.73$7.73 $9.49$9.49 $12.34$12.34 $8.19$8.19 $8.99$8.99 — no data Size 10mm 18mm 30mm 10mm 20mm 4mm-50mm Diamond Processing Electroplated Electroplated Sintered Sintered Sintered Electroplated

Diamond Drill Bits Electroplated diamond is uniform and more wear-resistant. The hole saw achieves high precision and smooth cuts without edge breakage, with good toughness and high strength.

Wide Applications Suitable for cutting accurate holes on glass, ceramic, tile, porcelain, marble, stone bottles and pots. Not suitable for drilling tempered glass, plastic and wood.

Large Clearance Hole The diamond hole saw with clearance hole facilitates the entry of cooling water and the escape of chips from the drilled hole. Makes the drilling process easier. The cutting is flat and smooth without scratches.

Features Diamond coating maximizes performance and retains a sharper cutting edge than traditional carbide or bimetal hole saws. Nickel plating on these bits maximizes your tools life with great resistance to corrosion.

Tips Use at low drilling speeds and drilling pressure. Always work with coolant (water) when drilling. Not suited for concrete or depth beyond about 1/2 inch. The hole should be entered smoothly, and no side pressure is applied.