Low Profile:Helps keep employees from tripping on cord connection. 10mm snap stud:Easily snaps to mat socket, fluch to mat surface. Either socket or ring terminal at end of cord:Allows easy attachment to building ground. Stud has threded hole:6-32 x 6.35mm flat head screw and countersunk washer are provided:Allows ground cord to be bolted to mat, keeps cord from disconnecting, ensures proper grounding. Ring terminal version has extra ring terminal included:Provided for customising cord length. 10mm mat stud, 1 megohm resistor, 4.5m wire