Ergonomic, easy-twist design, no need to pre-twist wire. Exceptional wire-range capacity - listed for combinations from #22 to #8 AWG (solid and/or stranded). Flexible outer shell virtually eliminates cracking and has white expansion indication lines. Extended skirt length provides over-strip protection. Sleek design helps reduce box fill. CSA Approved. 20A / 600V (CSA 22.2 #188 Certified).