Features SPRING TWIST: Electrical wire caps are made of PVC material, with spring inserts and ribbed nuts EASY TO USE: Electrical wire end caps are easy to use, no electrical tape is required, and no welding is required to connect wires FAST AND EFFICIENT: Screw on terminals conical springs pull the wire into the connector, eliminating the need for pre stranding FLAME RETARDANT MATERIAL: Wire nuts are made of flame retardant material and connected to solid wire or twisted wire WITH BOX: Electrical wire end caps equipped with a storage box for easy storage, portability and access, and also prevent damage and loss Specification: Item Type: Electrical Wire Caps Material: PVC P1(20pcs):  Color: Gray Rated Voltage: 300V Withstand Temperature: Maximum 105℃ Applicable Wire: 2 x Flexible wire 0.5-1.5mm² P2(20pcs):  Color: Blue Rated Voltage: 300V Withstand Temperature: Maximum 105℃ Applicable Wire: 2 x Flexible wire 0.5-1.5mm² P3(15pcs):  Color: Brown Rated Voltage: 300V Withstand Temperature: Maximum 105℃ Applicable Wire: 2 x Flexible wire 2.5mm² P4(10pcs):  Color: Yellow Rated Voltage: 300V Withstand Temperature: Maximum 105℃ Applicable Wire: 3 x Flexible wire 2.5mm² P6(13pcs):  Color: Red Rated Voltage: 300V Withstand Temperature: Maximum 105℃ Applicable Wire: 4 x Flexible wire 2.5mm² Package List: 20 x P1 Cable Cap 20 x P2 Cable Cap 15 x P3 Cable Cap 10 x P4 Cable Cap 13 x P6 Cable Cap 1 x Storage Box Package List 20 x P1 Cable Cap 20 x P2 Cable Cap 15 x P3 Cable Cap 10 x P4 Cable Cap 13 x P6 Cable Cap 1 x Storage Box