Draper expert 2 tonne folding engine crane draper expert 43924 b i expert quality i b hydraulic engine crane with swivel hydraulic pump for maximum safety and visibility whilst in use safety overload valve fine adjustment lowering handle with dead man s operation to prevent rapid uncontrolled lowering of load three pre set positions for lifting polyamide swivelling wheels to protect floor and reduce noise diagram on this page shows critical lifting heights and weights supplied fu