1、SPRING TWIST: Electrical wire caps are made of PVC material, with spring inserts and ribbed nuts 2、EASY TO USE: Electrical wire end caps are easy to use, no electrical tape is required, and no welding is required to connect wires 3、FAST AND EFFICIENT: Screw on terminals conical springs pull the wire into the connector, eliminating the need for pre stranding 4、FLAME RETARDANT MATERIAL: Wire nuts are made of flame retardant material and connected to solid wire or twisted wire 5、WITH BOX: Electrical wire end caps equipped with a storage box for easy storage, portability and access, and also prevent damage and loss 20 x P1 Cable Cap20 x P2 Cable Cap15 x P3 Cable Cap10 x P4 Cable Cap13 x P6 Cable Cap1 x Storage Box Item Type: Electrical Wire CapsMaterial: PVCP1(20pcs): Color: GrayRated Voltage: 300VWithstand Temperature: Maximum 105℃Applicable Wire: 2 x Flexible wire 0.5- 1.5mm²P2(20pcs): Color: BlueRated Voltage: 300VWithstand Temperature: Maximum 105℃Applicable Wire: 2 x Flexible wire 0.5- 1.5mm²P3(15pcs): Color: BrownRated Voltage: 300VWithstand Temperature: Maximum 105℃Applicable Wire: 2 x Flexible wire 2.5mm²P4(10pcs): Color: YellowRated Voltage: 300VWithstand Temperature: Maximum 105℃Applicable Wire: 3 x Flexible wire 2.5mm²P6(13pcs): Color: RedRated Voltage: 300VWithstand Temperature: Maximum 105℃Applicable Wire: 4 x Flexible wire 2.5mm²