12 Pcs Diamond Drill Bits - Glass and Tile Hollow Core Drill Bits

Description:

- Material: Steel
- 12pcs 4-50mm Diamond Hole Saw Drill Bit Set:4mm, 5mm, 6mm, 8mm, 10mm, 14mm, 16mm, 18mm, 22mm, 35mm, 40mm, 50mm

Features:
--This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials and only needs

Note:
If you smell burning, back off! Either your speed is too high or the pressure you're applying is too much. You're drill bit should never be hot to the touch, not even warm.

Please:
-- Always use water for lubrication., otherwise the diamond core drill will burn.
-- Can be used with a standard electric drill.
-- Start your hole diagonally, make a round trace and then hold drill straight.
-- Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably.
-- Use Coolant.
-- Minimum pressure.

Advantage:
The general rule is the smaller the diameter of your drill bit, the faster drill speed you can use. The harder your material, the slower drill speed you should use.
The shank diameters of the Diamond Drill Bits are:
The shank diameter of 8mm diamond drill bit is 6mm.
The shank diameters of 10mm and 14mm diamond drill bits are 6.8mm.
The shank diameter of 16mm diamond drill bit is 7.1mm.
The shank diameter of 18mm diamond drill bit is 8.5mm.
The shank diameters of other diamond drill bits are 10mm.

Application:

Drill Glass, Tile Bottles, Blocks Jars, Fiberglass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone

Note:

Please keep the speed in 800-1000 per minute, keep adding water to keep the drill cool, strictly prohibit from dry drilling

Sample Policy:

1. We can Provide samples for free to test.

2. We can make samples within 7-10days.

Delivery:

1. Deliver by Sea,Air,Express.

2. 20-30Days after your deposite,as per your quantity.

Payment:

1. We can accept T/T,L/C,Wester Union,etc

2. 20-30%payment in advance,the balance before shipment or against copy of B/L.