WireGard High Performance Twist-on Wire Connector, 50 PieceProduct Description:Polypropylene Shell With Side Knurling For An Easy GripColor: YellowWire Range: 22 – 10 Gauge Solid Or Stranded ConductorsQuantity: 50 Piece BagTemperature Rating: 105 Degree C (221 Degree F)Innerspring: Zinc Plated, Square Profile Steel WireRated at 600 Volt Max In Building Wire And 1000 Volt Max In LightingShell Features Deep Skirt Design To Prevent Exposure Of Bare WireRequires Fewer Turns To Reach Required TorqueApprovals: UL Listed, CSA, RoHSGardner BenderGB-4