The blue Heat Shrink Butt Connector Crimp Terminal is a high-quality electrical accessory designed for secure wire connections. It is compatible with 16-14awg wires, has a 4.0mm outer diameter and a 15mm length. It provides strong and reliable connections through its crimping mechanism and offers excellent electrical conductivity. It is made with durable materials that protect against moisture and corrosion. The heat-shrink feature provides insulation and safeguards against short circuits or electrical shocks. The blue color allows for easy identification during installations or repairs. Its compact size and lightweight design make it convenient to use in tight spaces. It is a professional solution for joining wires and is suitable for electricians, DIY enthusiasts, and professionals seeking safe and durable connections.