Diamond Drill Bits Durable Sturdy Industrial Quick Hole Drilling Tool for BrickConcrete Structures(20x370mm )

1、With seamless steel pipe design, has a longer life, can be well balanced in use, and is not easy to deform

2、The seamless steel pipe sintered with high‑quality diamond powder is more tough and durable

3、Simple to use and easy to replace, it can meet your needs and ensure your operating efficiency

4、Equipped with concentric shafts, drilling faster, and the drill bit does not deviate from the center during work

5、Compatible with a variety of equipment, suitable for hand‑held drilling rigs/bench‑type drilling rigs

Item Type: Diamond Drill Bits

Wall Thickness: Approx. 4mm/0.15in

Drill Body: 45# Seamless Steel Pipe

Knife Tooth: Flat Tooth

Diameter: Approx. Φ18mm/0.70in, Φ20mm/0.78in, Φ22mm/0.86in, Φ25mm/0.98in, Φ27mm/1.06in, Φ30mm/1.18in

Length: Approx. 370mm/14.6in

Tooth Characteristics: Top Flat Tooth

Early Use: Drilling and Sharpening Speed

Later Period of Use: After Using for a Period of Time, the Speed Drops

Scope of Application: Multi-story Residential Brick-concrete Structures, Engineering Subways, Bridges, Expressways

1 x Diamond Drill Bits