Features and Benefits: All new fin design lowers temperature by almost 27-percent; Stronger hold in shear (vertical) position allows for use with heavy gauge ground cable; No more tacking on tabs and searching for ground location; Instantly attaches to surfaces where clamps cannot; Stays clean when switched off debris just falls away; Magswitch Switchable Magnetic Ground Clamps let welders quickly setup, weld and move on to the next job. Simply place it on a clean surface, turn it on and start welding. Instant ground on flat or pipe.