Syntec 1" GCB25BK Pro Diamond Wet Core Drill Bit for Concrete Drywall Screws helping to resist rotaion around

helping to resist rotaion around the base

5/16" hex head (replacement driver bit — BITHEXR516-R1)

Beam and structural support in steel construction

for both nominal and rough-cut lumber

low-profile screw head is preferred for aesthetics or clearance

Syntec 1" GCB25BK Pro Diamond Wet Core Drill Bit for Concrete Drywall Screws helping to resist rotaion aroundSyntec has been working hard for over two decades to manufacture exceptional power core bits for the construction industry. Syntec's diamond drilling tools can be used for a wide range of applications whether it is light or heavy duty drilling. The GCBBK Pro core bits are an ideal option for drilling into medium to hard concrete with medium steel reinforcements. Syntec's drill core bits feature diamond tipped segments and fittings comprised of sturdy