1 inch Concrete Core Drill Bit Diamond Hole Saw

Description

25 mm Diamond Core Drill Bits for Grinder

25mm core drill bits suitable for angle grinder , used for concrete/tiles/marble/granite/quartz/ceramics, etc., designed for wet drilling, good blade sharpness, fast drilling speed, no shaking during use, sharp and no edge collapse. The holes are neatly opened, smooth and edgeless. Long service life.

• Diameter: 1 inch(25 mm)
• Hole diameter: M 14 or 5/8-11

How to open holes correctly

1. First lean lightly at a 45° bevel. The smaller you go, the less likely it is to slip. The full name is to maintain a high speed to open an arc positioning groove
2. Slowly vertically open the hole opener, press down at a uniform speed to drill quickly.
3. Drilling Guo Changcheng requires water to cool the drill bit, which can extend the service life of the drill bit. Keep steady when drilling, and do not bend or shake to advance.