Description
JINGLING 175mm 7″ inch Diamond Drill Bit Hole Saw for Glass Tile Ceramic Product Name: 175mm inch Diamond tip drill bit, 175 mm Glass hole saw bit, 7 inch Glass drill bit Product Description: Hole/outer diameter: 175mm (close to 7″ inch) Inner Diameter: 171mm Shank Diameter: 10mm(3/8″) Total Length: 55mm (2.16″) Drill Depth: 25mm(1″) Quantity: 1 Piece Do NOT Use Dry Features: Brand New & High Quality Easy to use, Good performance and long life Excellent for making clean and accurate hole on glass, tile, granite and marble The Diamond Hole Saw Does NOT Have Center Pilot Drill There is no need for a Pilot Drill Bit, because pilots are not safe for glass Can be used with Handheld or Upright Drillers Works better with an Upright Drillers ( excluding in this item ) Drilling speed: Drill a hole in seconds Use with water as a lubricant Quick Tips: 1. Please add water for coolant and drill slowly 2. Start drill at 45 Degree to surface and align to 90 Degree as hole forms 3. Never use drills while machine is in hammer action 4. Holes require no futher work as cutting is cleanHow to use a hand drill to drill holes in the glass/tile/stone? Step 1. The bit on the glass/tile/stone 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 glass/tile/stone finally, the technique requires a “wobble” of the drill rather that steady pressure straight on