Description: Terminals made of brass plating tin, high conductivity, anti-oxidation, durable, high-quality plastic protective cover, insulated flame retard. Made of high quality plastic, terminal wiring is completed, the protective cover put on it, the perfect effect of insulation flame retardant, safe and secure. Suitable for : car, motorcycle, truck, marine,quad bike,scooter, boats, electric instruments etc. Buss fuse panel for garages,auto electricians,mechanics,workshops etc. Only need the wire are connected to the male and female terminals at both ends, and then the male and female terminals docked to complete the wiring easily, the male and female terminals can be disconnected when not needed. Specification: Color: silver, gold,clear Material: Brass, Tin,plastic Size: 3.9mm (diameter) Package Includes: 50 sets connectors(male&female) 50 sets gold connectors(male&female) Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Please check the size measurement and the picture carefully before making payment. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand,Thank you.