All of our tools have been engineered certified and proof tested by an accredited testing facility. We have followed OSHA and ASME standards. All of our tools can be used to set a single pick, Christmas treeing, and also in panelizing. EZ JOIST RELEASE comes in 3 sizes: G series (Girders) 7000# load limit, K series (most popular series) 6000# load limit and LS/LH (for small joist with 3/4" top cord). EZ BEAM RELEASE was developed to hang steel 'I" beams faster and safer. This tool is to change the way the world sets "I" beams. 2 1" x 2" slots will be incorporated into the cad drawing for the tool to fit into.