Specifications:
Type: Core Drill Style Bit
Material: Carbon Steel, Natural Diamond Sand
Quantity: 15 pcs 6mm -- 50mm
Color: Silver

Features:
✔High rigidity diamond this tile hole saw are made of industrial grade carbon steel with nickel-plated coated body that resist corrosion.
✔Thicken corundum coating on the tops offers superior cutting strength for maximum drilling outcomes.
✔Widely application there are 15 different sizes included with this glass drill set to meet various demands.

Widely Application:
✔Perfect for removing a complete circle from glass, tiles, marble, ceramic or other materials. Ideal for drilling accurate and clean holes.
✔Can be installed on a standard electric drill, a professional drill or drill, bench drill.

Package Content: 15 * Diamond Coated Drill Bit

Instructions:
1. Mount the drill bit on a common drill such as a hand drill.
2. When operating, let the hole opener tilt 45°, slow down the speed of the drill, and slowly contact glass, stone etc.
3. Open one crescent on one side of the hole, then start the work with the vertical drill.
4. Don't be too fast in the process of opening the hole, be sure to continue adding water to cool the hole opener.

Attention:
1.Please keep the speed within 800-1000 per minute, low drill pressure and increased use of water lubrication will extend drill bit life.
2.Please keep adding water when the diamond drill bits are working on the glass or ceramics.
3. Size for manual measurement, there may be a 1 to 3 mm error, belongs to the normal phenomenon.
4. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!