The Easy-Twist SB1408S 50-Count Pack of Steel Crimp Sleeve Wire Connectors are designed for use on wires in the 14-8 AWG size range. The simple brass-plated sleeve design forms low-resistance connections in a tight space and installs using a specialized crimp tool or adjustable pliers. Use crimp sleeves to permanently connect wires in grounding, uninsulated or small motor applications where vibration resistance is a concern.