175PCS Electrical Wire Connectors Screw Terminals with Spring Insert Twist Nuts Caps Connection Assortment Set – Orange, Gray, Blue, Yellow and Red Connectors with Storage Case: Amazon.com: Industrial & Scientific
Amazon.com: Nilight 220PCS Wire Screw Caps Kit 5 Sizes Electrical Wire Caps Assortment Spring Thread Insulated Wire Screw Terminals Twist on Wire Connectors for 22-12 AWG Wires, 2 Years Warranty : Industrial & Scientific
Caplugs Plastic Electrical Connector Dust Cap AS138-30C, E/VAC, Meets New SAE Aerospace Specification AS85049/138. Please See Drawing, Black (Pack of 100): Amazon.com: Industrial & Scientific
Wideskall Electrical Wire Connectors Screw-On Terminal 22-10 AWG Twist Nuts Caps Assortment Set Pack of 35 - Walmart.com
XtremepowerUS Electrical Wire Connector Cap with Spring Insert Assortment (158-Piece) 13259-XPH1 - The Home Depot