Product Review

✔ Ingenious Design
Two side holes on the bits allow for easy slug removal to increase drilling accuracy and efficiency.

✔ Makes Drilling a Breeze
Each drill bit comes with a shank that holds the bit in place without slipping. You'll be able to drill clean holes effortlessly!

✔ Multipurpose:
The Tile Hole Saw is perfect for drill glass, tile bottles, blocks jars, fiberglass porcelain tile ceramic, slate mable, granite light stone etc.

Specifications:
Material: Diamond Core Drill Bits
Color: Silver
Quantity: 15 PCS
Size: 6mm(1/4"), 8mm(5/16"), 10mm(3/8"), 12mm(1/2"), 14mm(9/16"),
16mm(5/8"), 18mm(11/16"), 20mm(3/4"), 22mm(7/8"), 25mm(1"),
26mm(1-1/32"), 28mm(1-3/32"), 30mm(1-1/8"), 40mm(1-1/2"), 50mm(2")

How to Use:
1: Use pen to mark start of hole, and keep wet with water or coolant.
2: Angle drill 45 degrees to start hole, and being drilling at low speeds. Angle drill to vertical position once the hole has started.
3: Minimum pressure, slow speed down for exit hole or drill from the other side to prevent breakthrough.

Warm Note:
- It may cause the burning smell, if your speed is too high or the pressure you are applying is too much.
- keep adding water when the diamond drill bits are working, otherwise produce high temperature to burn out the hole saw.
- These bits are not suitable for drilling concrete or materials that are thicker than 0.5 inch.
- To prolong the life of the bits, lower drilling speed and wet the surface with water for added lubrication.