Our heavy-duty clips are crafted from pure copper, ensuring maximum efficiency and longevity. The spring-loaded mechanism provides a firm hold on battery terminals, while the insulation protects against electrical hazards. Suitable for use with 4mm banana plugs, these clips are perfect for automotive, marine, and industrial applications. Features -Color:Assorted Color -Material:Copper, ABS -Size:5.40X2.40X0.80cm/2.12X0.94X0.31in -Exceptional conductivity: Insulated Clips, made from sturdy abs and copper, these clips deliver outstanding electrical conductivity, ensuring stable and efficient power transmission -Powerful spring design: featuring a robust spring design, these clips provide a strong and reliable grip, making battery connections quick and easy -Wide compatibility: compatible with 4 mm banana plugs, these clips are versatile and suitable for a variety of electronic devices and experimental environments -Secure connection: the clip head offers excellent clamping force, preventing slippage and maintaining a stable connection in any setting -Durable and reliable: engineered for durability, these clips are built to withstand frequent use, ideal for automotive repairs and electronic experiments Package list: 12 x battery clips