:The female and male terminals are made of brass plating and the insulating sleeves are made of nylon,high conductivity,anti-oxidation,durable enough for your use. Easy wiring:Easy Using:You just need to connect the male and female terminals at both ends,and then the male and female terminals docked to complete the wiring easily,and also disconnected when not needed. Wildly Application:It can be wildly used to home appliances,computer,audio system for battery,rocker switch quick connecting/disconnecting,motorcycle,scooter,auto,car,truck,boat etc Sizes: 2.8mm Type:Thickness:0.25mm(Female),0.5mm(Male);Compatible Wire:0.5-1.5mm²(AWG 22-16). 4.8mm Type:Thickness:0.35mm(Female),0.5mm(Male);Compatible Wire:0.75-2.5mm²(AWG 18-14). 6.3mm Type:Thickness:0.4mm(Female),0.8mm(Male);Compatible Wire:0.75-2.5mm²(AWG 18-14) colour: gold + parent Material: Brass+nylon Package Contents: 60 x 2.8mm male terminal crimp terminal connectors 60 x 4.8mm male terminal crimp terminal connectors 60 x 6.3mm male terminal crimp terminal connectors 60 x 2.8mm female terminal crimp terminal connectors 60 x 4.8mm female terminal crimp terminal connectors 60 x 6.3mm female terminal crimp terminal connectors 120 x 2.8mm insulation sleeves 120 x 4.8mm heat insulation sleeves 120 x 6.3mm heat insulation sleeves Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.