Twist-On Connector Kit For Conductor Material Copper Insulation Material Plastic Maximum Operating Temperature 221 Degrees F Minimum Wire Size 18 AWG Maximum Wire Size 10 AWG Number of Pieces 150 Termination Style Twist-On Tools Included None Manufacture Model Numbers Included WT51 WT52 RoHS Compliant No Standards CSA C2.2#188 Certified UL 486C Listed Connector Assortment Type Twist-On Terminals For Conductor Type Solid Copper Stranded Copper