Trend CB12-316TC 3/16 drill diameter x 1/2 counterbore. The CB counterbores are extensively used for recessing bolt and screw heads. Supplied with a HSS slow spiral drill bit. Fully adjustable, a hex key is supplied. TCT version is used for plywood, particle boards and plastics (abrasive).

Brand Name	Trend
Manufacturer Model No	TRECB12-316TC
Type	Counterbore
D	1/2 inch
D2	3/16 inch