1pc Drill Bit Positioning Diamond Coated Center Drill Bit Hole Saw Cutter Hole Opener for Drilling Tile Marble Glass 6-120mm,50mm

Application:Scope of application: glass, vitrified bricks, ceramics, ceramic tiles, marble, granite, microcrystalline stone, quartz stone, etc.Not applicable: metal, plastic, red brick, tempered glass.Usage models: electric hand drill, rechargeable drill, bench drill.After completing the positioning of the center drill, remove it so that it is not easily damaged. After removing the center drill, the drilling efficiency is high, and the center drill is not easily damaged, which also reduces the probability of damaging the ceramic tiles and glass1. Manual measurement, there may be some deviation, please refer to the actual delivery!2. There may be color difference due to lighting issues during image shooting, subject to actual arrival!3. Special circumstances may be encountered during transportation, and slight scratches and bumps on the product will not affect the effectiveness of use!

• Center drills: With detachable center drill bit, the positioning is accurate and the hole saw won't be slipped during drilling. Improve the efficiency of holing.
• Sharp and Smooth Cut: Coated with high quality diamond, creates a high precision, makes the bit sharper than traditional hole saw, smooth cut with no broken edges. Making it conducive to grip drills.
• Side Opening and Laser Marking: With large clearance hole, facilitates the entrance of cooling water and escape of ships and keeps the drill bit clean. With laser marking, the size mark it's not easy to be erased. The right size will be exacted to chosen.
• During use, it is necessary to continuously add water for cooling to avoid burning the cobalt head and reducing its service life!!!
• Due to the inability of water to enter the central drilling position during drilling, the central drill bit is easily burned out. After completing the positioning, it is necessary to remove the central drill bit,