"Convert your fork truck into a rigid swivel hook in a matter of seconds. The easy to attach Hoisting Hook does not require the assistance of special tools. Fork Openings W x H in. 6 x 2 1/4, Load Capacity lbs. 4,000, Hook Rigid hook, Product Style Hoisting hook, OSHA Approved Yes. Hook type Rigid Usable fork pocket size 6in.W x 2 1/4in.H Capacity 4000 lbs. Secured to the fork truck by means of a 36in.-long safety restraint and screw clamps Zinc plated Hook with shackle included"