Twist-On Connector Kit For Conductor Material Copper Insulation Material Nylon Maximum Operating Temperature 221 Degrees F Minimum Wire Size 22 AWG Maximum Wire Size 12 AWG Number of Pieces 170 Termination Style Twist-On Tools Included None Manufacture Model Numbers Included Model 102 Model 103 Model 182 Model 33 Model 42 Model 72B Model 73B RoHS Compliant No Standards CSA C2.2#188 Certified UL 486C Listed Color Orange