This tool from RockJock is designed to make the assembly and disassembly of our popular 3 in. Johnny Joint(R) rod ends simple! Tool can be used either in a bench vise, or it can also be used on the vehicle for repairs and rebuilds of Johnny Joints(R). Construction is CNC machined heat treated steel components, ½'-13 all-thread, and premium thrust bearings. Tool is completely rebuildable, and all parts are available through RockJock. Tools sold each - multiple tools in picture for illustration purposes only!