Exceptional wire range capacity, three models handle wire combinations from as small as 22 AWG to as large as 6 AWG|Comfortable swept wings offer extra leverage and less effort on large wire combinations|Expanding square wire spring supports a wide range of common wiring configurations|Durable co-polymer shell expands for smooth, progressive tightening that provides dependable connections|Hexagonal top with ribbed cap allows for quick fingertip start as well as use of standard 5/16 in nut driver for fast installation|Quick take up on even the toughest combinations and including solid to stranded|1000 V maximum in fixtures and signs|Ribbed cap provides a secure grip and fast fingertip starts|Live action, square wire spring locks onto wire for safe and secure connections|Deep skirt helps protect against flash over and turned back strands for maximum dielectric protection