Check the listing for details. 20Pcs Battery Spring Brass Contact 11.5 x 10.6mm Positive Negative Unipolar. Condition: New. Listed at 15.32 USD. What is this?Made of quality brass with a high copper content, these springs offer excellent conductivity, and a stable, low-resistance conductive path. The nickel-plated surface provides oxidation and corrosion resistance, ensuring durability and effectively extending battery lifespan. They are designed to fit different battery compartments, suitable for a variety of appliances like remote controls and alarm clocks.What will I get?Overall Size: 11.5 x 10.6mm / 0.45" x 0.42" (L x W)Thickness: 0.3mm / 0.01"Plug type: Spring ContactMaterial: Brass, NickelingIn the package: 20Pcs x Battery Spring Plate Are there any advantages of the product?The spring contact design ensures a stable and reliable connection, withstands repeated compression and expansion, enhancing the functionality of your battery devices.