Hello everyone,this is HEBEI HUAHENG DIAMOND TOOLS CO.,LTD that is the professional manufacturer of core drill barrels. our website is www.hhdiatools.com.

the diameter: 10mm to 1200mm

the length : 350mm, 400mm, 450mm,...upto 2000mm

the thread:1-1/4"-7UNC, 1/2"BSP, 5/8-11"UNC, M14, M16,...

There are so many types, as follows

Wet Core Drill Barrels

Dry Core Drill Barrels

Three Sections Barrels

and Adaptor, Extension

If you are interested in our products,please contact us. www.hhdiatools.com.