These Vestil Truck Fork Extensions are constructed of welded steel with cast steel tips to provide the extra support needed to lift long or large objects with a fork truck. 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. 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. Available in selected 48in. to 96in. lengths.