Vestil is an industry leader in the manufacturing of industrial material handling equipment We stand behind our products and undersatnd the customer requirements and find the best solution for their application We deliver value to our customers by engineering new designs and products which increase productivity improve workplace ergonomics and decrease worker injury The Positive Locking Plate Clamp grips a sheet until release ring is pulled Serrated gripper is hardened tool steel Forged head and gear Lift only one clean oil free plate at a time Safety factor is 2 to 1 Not designed to use on stainless steel or aluminumm plates For use with materials with a surface hardness to 30 RC 300 HB Specifications. Capacity 4000 lbs. Dimensions 75 H x 35 W x 12 L. Weight 12 lbs