This is a set of crimp terminal connectors with insulating sleeve, made of 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: About 17.50X10.00X2.30cm/6.88X3.93X0.90in. -Type: 2.8/4.8/6.3mm. - Male and female spade connectors are made of tin-plated brass, whose surfaces are plated with tin which good conductivity. - The insulating sleeves are made of quality material, high conductivity, , 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, to use. - Just crimp solder to your wires and cover with a nice heat-shrink for a clean, solid, and professional connection. Package list: 90 x Male Spade Crimp Terminal Connectors 90 x Female Spade Crimp Terminal Connectors 90 x Female Terminal Insulating Sleeves