Posted By William Well for a start the hooks would need to be either made by a company and then tested, given a ce mark, marked with the swl. When you say 2 slings supporting 4 hooks, would i be right in thinking the slings are nylon, slung an equal distance over the hook from the crane? if so then you would need to reduce the swl of the slings by 50%, then you would have a problem with the manufacture of the hooks as to whether they would cause damage to the slings, then the area could be considered a confined space with limited space to move around. As for using a crane to lift them out, it would be better to use the crane to hang a chain block off and take it out nice and easy, if you have a beam which has been certified with a swl then that would be better, you would not want to use a crane for easing out delicate pieces of equipment in tight areas that's chain blocks are for. Some people get all the fun jobs!