Syntec 9" GCB228BK Pro Diamond Wet Core Drill Bit for Concrete Diamond Blades and Accessories If you have a nominal

If you have a nominal post measuring 5-1/2x5-1/2" you will need an ABA66Z Post base

The oval head sits neatly above the surface

Piling Applications: Designed for pile-to-beam and heavy timber connections

Self-Drilling #1 Drill Point: Eliminates the need for pre-drilling

Type 17 point - allows fast starts and reduces the risk of splitting

Syntec 9" GCB228BK Pro Diamond Wet Core Drill Bit for Concrete Diamond Blades and Accessories If you have a nominalSyntec 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