The butt splice connector set is convenient and practical, with excellent texture, and can serve you for a long time without being easily damaged. The craftsmanship can serve you well without breaking easily. This is a very practical butt splice connector set. Features -Color:Assorted Color -Material: copper, nylon -Size:2.40X0.60X0.60cm/0.94X0.24X0.24in -Size:2.50X0.80X0.80cm/0.98X0.31X0.31in -Size:2.40X0.65X0.65cm/0.94X0.26X0.26in Specifications: 22-16AWG (red crimp connector), 16-14AWG (blue crimp connector), 12-10AWG (yellow crimp connector) Wire range: 0.5-1.5, 1.5-2.5, 4-6 square millimeter Maximum = 19A, , 45A Operating temperature: - centigrade ~ 75 degree centigrade (14 fahrenheit scale ~ 167 fahrenheit scale) - The wire-stop structure design helps you to insert wire into the right place to ensure the effect of crimping. - With the electronic butt connectors, one or more different conductors can be crimped in a short space. - Insulated crimp terminals butt connectors are for automotive use. Please crimp one side of the butt connector with professional tool or they will be lose. - The flared barrel of the insulated butt crimp connectors is easy to insert. - Every detail is carefully crafted, experience the high durability and practicality. Package list: 1 AWG22 Connectors AWG16 Connectors AWG12 Connectors