Crimp connectors for strong vibration-resistant permanent connections in branch circuits and fixture wiring. UL Listed. The Gardner Bender Zinc-Plated Crimp Sleeve Connector provides a strong vibration-resistant permanent connection in branch circuit and fixture wiring. Zinc-plated steel construction gives the connector extra strength and durability. It is designed to work with 18-10 AWG wires with a minimum of two #16 and a maximum of two #10 with one #12. Gardner Bender has 50 years of experience making professional electrical tools and supplies of consistently superior quality so you can count on high-performance products at a fair price.