male and female electrical connector joint wire replace 3M uy connector 1. Used to connect two wires safely and rapidly with moistureproof. 2. Applied to the conductors with inner diameter of 0.4—0.7mm 3. Can connec the cable directly 4. You need’t to shuck off the covering layer when connecting,it can be compression in one time,junction with organic silicon grease oil sealed ,waterproof and antisepticize 5. There are UY,UY2,UR,UDW2 type etc