Packaging included 40 red Butt Connector + 50 blue Butt Connector + 10 yellow Butt Connector, totally 100pcs crimp connectors. Material: copper+PVC, gauge 22-16 (red), 16-14 (yellow), 12-10 (blue), colored pipe with wire gauge stamp for easy identification of the correct size. Crimp connectors easy to crimp and will not split and the designed to tightly grip the wire with the least effort. The tinned copper gives the least electrical resistance but the most corrosion protection which for the electrical connection to play an insulating and protective role. Good connection and repair of electrical crimping tool which suitable for automotive lighting, car speaker wire, any cable and wire project in home, workshop, garage. Specification: - Type: Butt Splice Terminals Connector - Material: Copper+ PVC - Colors: Red, Blue, Yellow - ModelBV1.25, BV2, BV5.5 - Red Butt Connectors: (BV1.25), Suits cable: 0.75-1.5mm, Wire sizes: 22-16 A.W.G, Max current=19A; - Blue Butt Connectors: (BV2), Suits cable1.5-2.5 mm, Wire sizes: 16-14 A.W.G, Max current=27A; - Yellow Butt Connectors: (BV5.5), Suits cable: 4.0-6.0 mm, Wire sizes: 12-10 A.W.G, Max current=48A; Package Includes: 100 x Insulated Crimp Terminals Kit (40 red, 50 blue and 10 yellow) Kindly Tips: - Please crimp one side of the butt connector with a professional tool or they will be losing. - If wires slip out after crimping or the wire is under 20A.W.G, please double the wire and use the professional tool. - Different color butt connector suits different gauge type wire.