Premium Materials: These electrical connectors are made from premium tinned brass inserts and PVC insulation which resists corrosion, insulates well and prevents vibration in harsh environments.EASY TO USE: Provides a secure connection between two wires without soldering. Brass housing provides higher current and lower voltage drop for quick electrical repairs.Easy to Store: All insulated wire connectors are neatly packaged in a plastic storage box for easy storage and carrying, easy to identify or use for different purposes.Wide Application:Suitable for factory applications, d workshop, garage, car, truck, motorcycle, aerospace, home, commercial or outdoor. Ideal for automotive electricians, mechanics, home users, hobbyists and beginners.Package Contents: You will receive an assortment of 280 wire terminals, insulated terminals in 15 of the most common sizes including ring, fork, spade, spade, electrical crimp connectors.