The Backsaver Crane is fitted with 360° mechanical slewing by means of a worm drive gear. This eliminates the danger of the crane boom swinging out of control when the load is taken up. The boom can only be rotated (slewed) by operating the slewing, control handle. This important safety feature keeps the load under control at all times - essential for oneperson operation. With a choice of two models, the Backsaver Crane suits a host of reach and lift requirements. There are two sizes 300kg and 500kg. The 300kg units have extendable booms lift positions. Both models have a choice of boom angle settings for even greater adaptability.