3M 03734 Electrical Connectors, 79-Piece Assortment of 79 electrical connectors For use with: Red 22 to 18-Gauge wire, blue 16 to 14-Gauge wire and yellow 12 to 10-Gauge wire Electrical Connectors are reliable, simple to use and versatile Easy wire insertion, UL listed Includes Ring, splice, slide, snap and quick connects