Hilitchi 175Pcs Electrical Wire Connection Screw Twist Connector Cap w/Spring Insert Assortment Set Easy to use, premium quality Electrical Wire Nut Connectors Flame-resistant thermoplastic shell for safety and electrical insulation Package quantity: 175pcs (Grey: 35pcs, Blue: 35pcs, Orange: 35pcs, Yellow: 35pcs, Red: 35pcs ) Maximum Rated Voltage: Grey, Blue and Orange (300 Volts), Yellow and Red (600 Volts) Packaged in a convenient plastic box