"These Vestil fork extensions provide the extra support needed to lift long or large objects with a fork truck. Extension Width in. 5 1/2, Fits Forks W x H in. 5 x 2, Fork Thickness in. 2, Load Capacity lbs. 4,000, Overall Height in. 2, Extension Length in. 84. Provide the extra support needed to lift long or large objects with a fork truck Welded steel construction with cast steel tips Standard loop style operation insert loop at the tip of the fork and slide it up at a 45 angle, then lay it down over the existing fork Powder-coat yellow finish OSHA regulations require that extensions are no more than 150 of the existing fork length e.g. 48 in. existing forks, the fork extension should not exceed 72 in. Maximum uniform capacity is 4,000 lbs per pair"