STC Core Bit Abrasive 1-1/4" 7 UNC 57-610x430mmSyntec abrasive concrete core bit, 1 1 4" 7 UNC thread. Premium heavy duty diamond core bits with laser welded segments for drilling through highly abrasive materials. Hard bond for improved tool life. 1 1 4" 7 UNC female thread. Available in a range of diameters from 57 to 610 mm with 430 mm drum length.
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