The VersaDrive Magnet Drill Adapter fits all standard magnet drills with 19mm (3/4\") Weldon magnet drill shank The 111035-01 upgraded VersaDrive Magnet Drill Adapter features New Rapid-Lock, single-handed loading and an Improved Quick Release collar mechanism preventing accidental tool release caused by vibrations or contact with the workpiece. Features: Fits to all standard magnet drills with 19mm (3/4\") Weldon magnet drill shank New Rapid-Lock, single handed loading Improved Quick Release collar mechanism  Specification: Shank size: 19.05mm / 3/4\" Diameter: 28mm Length: 66mm