Heavy pole terminals can be used for 12V, 24V, 60V car batteries. 4-way battery clamp: pole terminals car battery have 4 posts for cable connection. Designed for multiple cable connections and wiring is easy and convenient to change. Positive and negative: Suitable for wire diameter 5.2 - 7.4 mm (AWG 1 - 4) or section 16 - 35 mm2. Minimum wire size 16 mm (5/8 inch) max. Wire clamp: 9.5mm/0.37inch, mini wire clamp: 6.5mm/0.25inch, positive inner diameter: 17.5-19.1mm, negative inner diameter: 15.9-17.5mm. Easy to use: car battery clamps equipped with contact cleaning brushes, so you can quickly remove dirt, deposits and corrosion in just one minute. Wide application: battery clamps quick release can be used for cars, caravans, motorhomes, truck batteries, car radio, etc. Just make sure you connect the correct terminal for correct polarity. Material: Brass+Metal+Plastic colour: As shown Package Contents: 1 pair positive and negative battery clamps 4 x shrink tubes 4 x copper noses 1 x