The Schaefer 70-27 Fast Entry Cam Cleat is equipped with Die Cast Aluminum Cams and Delrin(tm) Ball Bearings for secure grip and smooth operation. Its Computer Designed High Flare design makes it easy to enter at any angle. With a Safe Working Load of 500 lbs (227kg) and compatibility with lines from 1/4″ to 5/8″ (6mm – 16mm), this cleat is a reliable choice. Simply attach with (2) 1/4″ Flat Head Fasteners at 2-1/16″ (52mm) Centers.