Can-Twist is a compact twist on connector that covers most residential wire combinations. It's easy to use in tight spaces and handles from 22-8 AWG solid and/or stranded wires. Its square spring design delivers quicker pick-up while the extended skirt length provides over strip protection. The flexible walls show that the wires are firmly connected. This connector has wings for added torque and can be easily removed for repeat usage . CSA 22.2#1888 Certified.