Dry Diamond Core Drill Bits 1 inch with Slots 25mm Diamond Hole Saws, with 5/8-11 Thread to 3/8” Hex Shank Adapter Fit Both Angle Grinders & Electric Drills for Porcelain Granite Tiles Brick Concrete

1 Inch Dry Diamond Core Drill Bit prefer to be spun fast, the faster the better, because it will reduce heat buildup. For maximum lifetime of the diamond tile core drill bit, we recommend using it with Angle Grinders or main High-Speed Drill (1800rpm or higher, corded, hammer action turned OFF)Instructions for use: For accurately positioned hole, use a guide if is available; alternatively place the high-speed rotating drill at a 45-degree angle to get a position groove, then bring the drill up into the upright position slowly and continue. DON’T press the drill, just hold it steady, let the machine do the job because the weight will give the bit sufficient pressure. However, a bit of pressure is required for horizontal drilling. The diamond cutter will become hot, please do not touch it. Cooling the bit enough during cutting will help to keep it sharp longer. When you feel a core drill is slowing in the cut, please try several holes into an abrasive material like a breeze block. It will redress the segments exposing the diamond grit and speed it up.Package includes:1 Piece of 1” Dry Diamond Core Drill Bit1 Piece of 5/8-11 Thread to 3/8” Hex Shank Adapter

• Diamond Holesaw 1 Inch – Vacuum Brazed Diamond coat designed for clean cutting in all types of tiles including Ceramic, porcelain, marble, granite, glass, and natural stone
• Fit Most Tools – 25mm Dry Diamond Core Drill Bit can be used on most angle grinders (5/8-11 thread) directly, or High Speed powered drills with the 3/8” Hex Shank Adaptor (included)
• Applications – This Dry Diamond Core Mill kit will save you time and money in jobs such as bathroom and kitchen tile fittings, stone countertop fitting; DON’T press, just let the drill do the job
• Speed and Smooth Cutting – With a slotted barrel to aid debris removal and cooling, you will get perfect holes with professional finish and minimum chip in a fast manner, no water required
• User Tips – for accurate positioned hole, please place the high-speed drill at a 45-degree angle to start a position groove, then bring the drill up upright slowly and continue; cool the bit enough to keep the diamond core drill bit sharp longer