ProSource 60209 Wire Connector Assortment, Steel Contact, Tough Thermoplastic Housing Material

Wire connector assortment consist of 158 pieces UL listed color-coded flame retardant for copper to copper connections. Cone shaped springs pull wire into the connectors for a firm & secure grip. Pre-twisting wires not required. Maximum rated voltage: Grey, blue, & orange: 300 Volts; Yellow & red: 600 Volts. Neatly organized PVC storage case.