From the manufacturer: Make specifically for Kreg Joinery and exclusive use with the Kreg Jig HD
Features a ¼" hex shank and compatibility with our Quick Change Chuck
Drills a HD 1/2" diameter Pocket-Hole
Features hex shank for compatibility with standard and quick-change chucks
Hex shank provides improved drilling torque, prevents chuck slippage
Package includes drill bit, stop collar and allen wrench