Circuit Connection: Round lug is used to efficiently connect the valve conductor to a power source (transformer, circuit breaker, disconnect, etc.) or to a substation wall channel. High quality materials: These automotive electrical terminals are made of high quality and environmentally friendly copper, are durable, non-deformable and have excellent electrical conductivity. They can be connected quickly and efficiently. Various sizes: car battery terminal kit includes 6 different sizes of ring terminals, 50PCS* for M3, 20 pieces of M4, M5, M6, M8 and M10 each, a total of 150PCS*. Different models can meet your different needs. Wide range of applications: motorcycle battery terminal are widely used in machinery, power station, railway, shipbuilding, aviation, home appliance and other automation equipments. Equipped with plastic box: quick lugs come with a plastic box which is very strong, which can effectively classify the ring cable and prevent leakage during transportation. Convenient for your access, storage and transportation.