Diamond core bits are used for drilling concrete, reinforced concrete, and asphalt, with fast drilling and long life, usually turbo segmented, or roof segmented which is better. Size from 25.4mm to 230mm.
Diameter: 25.4-230mm
Length: 300-470mm
Thread size, UNC1-1/4��
Delivery time: Around 30days

We, Johnson Tools Mfg.Co.Ltd is professional manufacturer of diamond tools which used in stone and construction industries, such as marble, granite, sandstone, limestone, basalt, grit stone, concrete, reinforced concrete and asphalt, etc.)In China, we have nine years successful exporting experience and 100 percent of our products are exported to worldwide (Euro, UK, Germany, Sweden, Italy, Spain, Portug, Czech, USA, South Africa, Ghana, Egypt, Australia, Yemen, Iran, PK, India, etc.).

Our main products:
1. Laser welded saw blade (Size from 105-1200mm, especially 700-1200mm laser wall saw blade and laser floor saw blade)
2. Sintered saw blade (Segment type, Continuous rim type, Turbo type, concave type saw blade).
3. Tuck point blade (Normal type, crack chasing type, two or three layers tuck point blade).
4. Diamond segments.
5. Diamond polishing and grinding products.
6. Vacuum brazed products(hand profile wheel, profile wheel, router bits, etc. ).
7. Cup wheel (Single row, Double row, Turbo type.)
8. Diamond core bits.
9. Electroplated diamond products.

More information about our company, please visit our website: http:// www.diatoolscn.com.