Material: The battery terminals are made of brass, with good electrical conductivity and corrosion resistance, which can reduce voltage distortion and transmission loss. Size: positive battery terminal connector (17.5mm-19.1mm) + negative battery terminal connector (15.9mm-17.5mm). Works great for replacing worn and corroded terminals. Easy to use: After battery installation, connects to battery terminals by pressing the lever, so no tools required . The wiring is convenient, the connection is firm, and it is not easily damaged. Special style: These battery connectors are bright in color and novel in design. Designed for top post batteries and side post batteries with standard post adapters Wide applications: Suitable for cars, vans, caravans, motorhomes, truck batteries, etc. Just be sure to connect the correct terminal for the correct polarity. Product Description Product Specifications: - Product Model: BC2114 - Material: Brass + Stainless Steel + Iron - Color: Red / Black - Positive inner diameter: 17.9 - 19.1 mm / 0.7 - 0.8 inch - Negative inner diameter: 15.9 - 17.5 mm / 0.6 - 0.7 inch - Stud diameter: 6mm / 0.2inch - Product Size: 55mm x 65mm / 2.2 x 2.6 inch - Product functions: power connection, stable current, battery protection and leakage prevention - Weight: 173g/pair Features: The quick release device has a red positive + and a black negative -, which are easy to identify to avoid the risk of electric shock. These battery terminal clamps can be used for battery extension, parallel connection and ground connection. Suitable for 6V / 12V positive or negative battery. The battery post is ideal for most vehicles such as battery cars, automobiles, ships and truck batteries. Package includes: 2 x Battery Terminals