Wire Terminals Connectors features: This is a set of crimp terminal connectors with insulating sleeve, made of high-quality materials, with long-term durability, and can serve you well, which can save much of your time when you are using it for your project. Features-Color:Silver.-Material:Brass, tin plated.-Size: About17.50X10.00X2.30cm/6.88X3.93X0.90in.-Type:2.8/4.8/6.3mm Male and female spade connectors are made of high-quality tin-plated brass, whose surfaces are plated with tin which ensures good conductivity.-The insulating sleeves are made of quality material, high conductivity, anti-oxidation, durable enough for your use,matching crimp terminal ,safe to use.-Male and female spade connectors comes with three different sizes: 2.8mm/4.8mm/6.3mm, different sizes can meet your different needs.-Male female spade connectors are easy to use and inspect, durable to use.-Just crimp and/or solder to your wires and cover with a nice high-quality heat-shrink for a clean, solid, and professional connection.