OZXNO 40 Pairs Battery Springs AA Battery Negative to Positive Conversion Spring Contact (12 x 12mm and 12 x 26.5mm)

["Size: Battery contacts: 12 x 12 mm / 0.47 x 0.47 inch, 12 x 26.5 mm 0.47 x 1.04 inch","Material: Battery spring replacement is made of iron, nickle plated, great electrical conductivity","Features: Battery spring will deform under external force. Once the external force is removed, the spring will return to its original shape. The spring inside the battery compartment is compressible and has good conductivity","Application: Suitable for various devices that require AA batteries, such as remote controls, clocks, remote control cars","Package includes: 40 pairs battery springs"]