Extends the working reach of all VersaDrive tools Rapid-Lock, single handed loading action and can also be usedin combination with other VersaDrive adapters Hex shank for non-slip use in any drill chuck Improved Quick Release collar that prevents accidental tool release caused by vibrations or contact with the workpiece Knurled collar - ultimate grip in greasy or damp conditions High quality, Heavy Duty steel components For use with VersaDrive system in rotary mode 11mm Hex Shank design provides secure grip in drill chuck Suitable for use in any standard 1/2" Drill Chuck