Exceptional wire-range capacity - listed for over 800 different wire combinations from 22 to 8 AWG (solid and/or stranded). Ergonomic, easy-twist design - only a few turns are needed to achieve torque, without the need to pre-twist wire. Heat-set, square-cut springs stay in place, and firmly grip wire for superior connectivity. Extended skirt length provides over-strip protection. Sleek design helps reduce box fill.