• Tight, square-wire spring threads directly onto conductors for fast connections with no slip
• Tightens without ratcheting, easily removed for repeat usage on same size combination or larger
• Fluted shell surface permits a firm grip for easy finger-tight connections
• Thermoplastic shell shields against environmental extremes
• Flame-retardant properties resist heat distortion up to 221°F
• Superior flash-over protection
• High-dielectric shell features deep skirt design to prevent exposure of bare wire
• Buttress threads screw into wire insulation
• For copper to copper connections only.