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Diamond Core Bits for Stone Column item ID: CBPE


RobtoL & RobLion manufacture vacuum brazed diamond drilling bits (also call brazed diamond core drills), this kind of brazed drilling bits is mainly used to drill granite, marble, concrete and wall. With years of research and application, the drilling bits is of very free drilling, high efficiency and long drilling life.

Dia. Dia. (Shank) Depth of drilling
6-200mm 5~13mm 40mm
6-200mm M3/8" or M5/8" or M14 40mm

Speed Drilling marble in thickness of 20mm 5~10secs/hole
Drilling granite in thickness of 20mm 15~40secs/hole
Working Life Drilling marble in thickness of 20mm 500~2000 hole
Drilling granite in thickness of 20mm 200~400 hole

update: Jun. 16, 2009


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