Built with two internally opposing magnets to hold the pliers open, the patented Mag Spring mechanism cannot fail, unlike conventional plier springs. The split ring nose opens rings to size 0 while the built in cutter cuts all lines or tag ends. Features stainless steel jaws and co-molded grips. Only 18 cm pliers come with a molded plastic sheath. Stainless steel jaws Repelling magnets keep jaws open