18mm 20mm 22mm Diamond Drill Bits for Diamond Hole Drilling Tool with Longer Life, Balanced Use, Compatible with Hand held Drilling Rigs for

18mm 20mm 22mm Diamond Drill Bits for Diamond Hole Drilling Tool with Longer Life, Balanced Use, Compatible with Hand held Drilling Rigs for

With seamless steel pipe design, has a longer life, can be well balanced in use, and is not easy to deform The seamless steel pipe sintered with high‑quality diamond powder is more tough and Simple to use and easy to replace, it can meet your needs and ensure your operating efficiency Equipped with concentric shafts, drilling , and the drill bit does not deviate from the center during work Compatible with a variety of equipment, suitable for hand‑held drilling rigs/bench‑type drilling rigs Specification:
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

Package List:
1 x Diamond Drill Bits

Notice:
When opening the hole, first incline 45° to open the small groove, then slowly straighten the drill bit, and the hole vertically.
It is strictly forbidden to use the electric hammer function, and it is recommended to use the electric drill function
Please note that the the opening number of this product is randomly issued with double openings and triple openings.

Please note that the new type and old type of this product will be sent randomly, and sure you will not mind before ordering.