The OTC Strut Tamer Safety Cage, No. 6637-5, attaches to the Strut Tamer with stand (No. 6637-ST), or behind the Strut Tamer (No. 6637) when wall-mounted, adding an extra layer of protection when rebuilding shock-strut assemblies. Constructed of 1" structural steel tubing and expanded carbon steel mesh to minimize the energy impact of a broken or rapidly decompressing coil spring. Its open design allows for access to the top and bottom of the shock-strut assembly for easy removal and replacement of the cartridge. Strut Tamer not included.