Ultra Clamp, 5 in to 12 in Opening ORS NASCO single locking Proprietary rustproofing for longer single locking Proprietary rustproofing for longer life Commercial grade padlock features superior protection from drilling and prying Choose between Keyed Different (KD) For transferring heavy duty materials such as coal and stones and general purpose clean up Wide flared deep dish for handling more material All new rugged frame built for job site use Smooth new roller clamping action for positive gripping Stainless steel contacts and alignment screws Operating handle repositions for close work Fine adjustment screws for quick fit up