BUCHANAN B-CAP® B2-B Flame-Retardant Wire Connector, Classic Fin/Twist On Shell, Live Action/Square Wire Spring, 22 to 8 AWG Solid/Stranded Wire, Polypropylene | State Electric
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50 Screw Twist On Wire Caps Terminal Connector Red 22-10 Gauge Closed End Nut | eBay
WPCONN10 - Waterproof Wire Connectors - 10 Pack
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Eagles 50Pcs Twist on Wire Connectors - Red #14 - #12 AWG Wire Cap Bulk with Spring Inserted, Easy Screw on Electrical Caps: Amazon.com: Tools & Home Improvement
Ideal B2-1 :: B-CAP® Wire Connector, Model B2 Red, 100/Box :: PLATT ELECTRIC SUPPLY