• Easy-on, easy-off without tools • Wings are knurled for a surer grip and offset from the centerline for greater twisting leverage • Easily removed for repeat usage on same size combination or larger • Expandable square-wire plated spring instantly adjusts tothe shape and size of the splice for a vibration-resistant connection • Tough thermoplastic shell shields against environmental extremes • Flame-retardant, non-porous and non-corrosive shell resists surface cracking and chemical action • Temperature rating:221 degrees F • Superior flash-over protection • High-dielectric shell features deep skirt design to prevent exposure of bare wire • Buttress threads screw into wire insulation • Copper to copper connections only • #84 Yellow: minimum 1 #8 wit • #18 To #10 AWG - 125 Per Jar • Color=#86 Red