BTBLBITS 3/4 Inch (20mm) Porcelain Tile Hole Saws Vacuum Brazed Diamond Drill Bits and 3/8" Hex Shank Adapter Package Content: 1PC of BTBLBITS 3/4 Inch (20mm) Porcelain Tile Diamond Hole Saw Vacuum Brazed Diamond Drill Bit and 1pc 3/8" Hex Shank AdapterRecommended Machine: for Hand or Electric Drill and Angle GrinderDia：3/4"(20mm)Threads: 5/8"-11 Threaded Diamond Drill Bit and 3/8" Hex Shank AdapterTotal length: 60mmCutting Method: Dry/Wet, Wet Drilling could prolong workable lifeApplication Material: Porcelain, Tile, Marble, Brick, Stones, Granite, Masonry, CeramicColor：Black High quality Diamond Grain and U-Shaped Chip Flute Design BTBLBITS Diamond Hole Bits are made with High-strength steel and High quality Diamond Grain with U-shaped chip flute designIt could provide fast and smooth drilling, and ensure longer workable life Vacuum Brazed Technology Vacuum Brazed technology makes the diamond grains permanently brazed to the edge of steel core,creating an unbreakable and heat resistant segmentsBTBLBITS diamond hole saws could be used in Dry and Wet Condition. Recommending the wet use, it will greatly prolong the segment life How to Use BTBLBITS Diamond Hole Saws Fix the diamond hole saw on an angle grinder tightly and correctlyTurn on the angle grinder and let the diamond hole saw rotating in the air to check if there is balance issuePlace the diamond hole saw at a 45 degree angleDrilling until the hole start to formMake the hole saw up into upright position (90 degree angle)Continue to drill and swaying the machine along a circle Diamond Countersink Drill Bits 35mm Diamond Chamfer Bits 82mm Diamond Beveling Chamfer Bits - 50mm Diamond Finger Milling Bit 25mm Diamond Milling Bits 10mm Diamond Finger Milling Bits 20mm Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.5 out of 5 stars 109 4.5 out of 5 stars 109 4.5 out of 5 stars 109 Price $19.89$19.89 $49.99$49.99 $49.99$49.99 $21.99$21.99 $15.99$15.99 $19.99$19.99 Diameter 1-3/8" (35mm) 3-1/4" (82mm) 2" (50mm) 1" (25mm) 3/8" (10mm) 3/4" (20mm) Shank 5/8"-11 5/8"-11 5/8"-11 5/8"-11 5/8"-11 5/8"-11 Diamond Beveling Chamfer bit with Hex shank 35mm Diamond Beveling Chamfer bit with Hex shank 50mm Diamond Chamfer bit 50mm with Hex shank adapter Diamond Chamfer Bit 20mm Diamond chamfer milling bit 6mm-25mm Diamond Milling Bit 10mm-25mm Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.4 out of 5 stars 352 4.5 out of 5 stars 109 4.5 out of 5 stars 109 Price $21.99$21.99 $26.99$26.99 $22.99$22.99 $13.89$13.89 $16.99$16.99 $20.99$20.99 Diameter 1-3/8" (35mm) 2" (50mm) 2" (50mm) 3/4" (20mm) 1/4"-1" (6-25mm) 3/8"-1" (10mm-25mm) Shank Hex Hex 5/8-11 and Hex 5/8"-11 Threaded 5/8"-11 Threaded 5/8"-11 Threaded