Feature: 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 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 Cap20 x P2 Cable Cap15 x P3 Cable Cap10 x P4 Cable Cap13 x P6 Cable Cap1 x Storage Box