BUCHANAN WINGTWIST™ Wire Connector, Series: WT51, Contoured Winged/Twist On Shell Style, Fixed/Square Wire Spring, Solid/Stranded Wire, 18 to 10 AWG Wire, 600 VAC, Specifications: 3/8 in Wire Strip, 1 to 6 Conductors, Min 18 to 2 AWG, Max 12 to 3 AWG Combination Size, 221 deg F, Polypropylene, Yellow, 0.52 in Dia x 1.02 in H x 0.73 in W Dimensions