CRL QuickBit 3/8-in Countersink Drill Bit

• Drill, countersink, and drive screws without switching bits
• Save time and labor with a single-tool flip design

Drill, countersink, and drive screws using one compact countersink drill and screwdriver bit combo (SKU: QU1CKB1T). Flip between drilling a countersunk hole and driving screws with a single hand—no need to change bits. Set screws secure both the countersinking body and driver, and either can be replaced with any 1/4” hex shank bit for compatibility with common hex drivers and impact-ready bits.


The countersinking drill is cut to an 82° angle so inch-sized flat-head and oval-head No. 10 screws sit flush with the work surface, delivering professional countersink results for woodworking, cabinetry, trim, and installation tasks.

For No. 10 Screw
Drill bit size: 1/8”
Countersink Body Diameter: 3/8”
Maximum Hole Drilling Depth: 1"

Key features: 82° countersink angle, 1/4” hex shank compatibility, set-screw retention, reduces tool changes for faster screw installation.

Order SKU QU1CKB1T now to speed up installations and achieve flush, professional countersinks—buy now.