JINGLING 16mm 5/8" inch Diamond Hole Saw Core Drill Bit for Stone Marble Granite

JINGLING 16mm 5/8 inch Diamond Hole Saw Drill Core Bit for Marble Stone Granite Tile Description: New Professional diamond marble hole saw core drill, made of high quality diamond with precision drilling speed and long life use Product Name: 16mm sintered diamond core drill bits, 5/8" inch diamond sintered bits Hole/Outer Diameter: 16mm (5/8" inch) Inner Diameter: 11mm Shank Diameter: 10mm (3/8") Total Length: 80mm Drill Depth: 48mm Recommend Speed: 2080-3140 rpm Quantity: 1 Piece Material: Metal, diamond Color: Gold Tone Application: Mainly used for drilling Stone, Marble, Granite ,Rebar Concrete and other hard material Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers, and vanities We don't recommend drilling holes in smooth ceramics and glass, because it is difficult to complete the drilling operation, and the edge of the hole will chipping Method of Use: Use Wet or Dry To prolong its using life, must use with water for cooling and lubrication Gold paints on the body of this bit to avoid getting rusty Feature drilling stably, fast speed, not breaking the border The hole saw can be used with Bench drill, hand electric drill When you using hand electric drill, start slowly, 45 degree angle, go vertical after you make an initial mark How to use a hand drill to drill holes in the stone/tile? Step 1. The bit on the stone/tile 45 degree, open a half-moon notch on it Step 2. Slowly up the bit to 60 degrees, and then gently drill Step 3. Reached 90 degrees, continue to drill Step 4. Drill through the stone/tile finally, the technique requires a "wobble" of the drill rather that steady pressure straight on The other considerations are depth, if you go more than the 1" or so the bit allows you will need to stop drilling and take a cold chisel to remove center section

• New professional diamond hole saw core drill bits for stone marble granite
• Hole/Outer Diameter: 16mm (5/8 inch); Total Length: 75mm; Drill Depth: 50mm (2 inch)
• Mainly used for drilling marble, granite ,rebar concrete and other hard material
• Ideal for drilling the faucet mounting holes in stone countertops, plumbing lines in showers, and vanities
• Recommended to add water during the drilling process, to prolong its using life