Good Material: The inside of Spade Connectors is tinned copper, which has good electrical conductivity. The nylon outside of Spade Connectors is heat-resistant and not easily deformed. Well-made: The outer nylon of Quick Disconnect Wire Connectors can insulate effectively, insuring the safety of the wiring connection. Detachable design between male and female Spade Terminal Connectors allows multiple insertions and disconnection. Easy to Use: Peel off the cover of wire, insert the wire into the connector and secure the wire by using a crimping tool. The Spade terminals are easy to connect and disconnect, meeting your . Wide Applications: The spade connectors can be widely used in household electrical wire connections, automotive and boat, etc. Spade connectors are convenient to use and can improve efficiency. Material: plastic colour: As Shown Package Contents: 40 x yellow Connector(20PCS male + 20PCS female) 100 x red Connector(50PCS male + 50PCS female) 140 x blue Connector(70PCS male + 70PCS female) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.