Low profile. Reduces inadvertent snagging that may disconnect ground cord. 10mm (0.395") snap stud. Easily snaps to mat 10mm socket snap, flush to mat surface. Stud has threaded hole; 6-32x1/4" flat head screw and countersunk washer are provided.
Allows ground cord to be optionally bolted to mat to keep cord from disconnecting; ensures proper grounding. Ring terminal at end of ground cord. Allows easy attachment to electrical ground.