What is this? The battery spring plate is consists of an iron plate and spring, suitable for your remote control, electric telescope, multimeter, battery operated radio, clock, battery charger, LED lantern, and any other stuff powered by batteries. What will I get? The battery spring plate, we provide here, is in size of: Plate Size: 29 x 11 x 0.3mm/ 1.14 x 0.43 x 0.012inch(L*W*H), 21 x 9 x 0.3mm/ 0.825 x 0.354 x 0.012inch(L*W*H); Color: Silver Tone In the package of 20 Pcs x AA Batteries Spring Plate and 20 Pcs x AAA Battery Plate Are there any advantages of the product? All battery plates are made from iron, have great electrical conductivity, better electric performance. What should I notice? All size is measured by manual, please allow +/-0.1 inches error.All size is measured by manual, please allow +/-0.1 inches error. All battery plates are made from iron, have great electrical conductivity, and have nice electric performance. Suitable for your remote control, electric telescope, multimeter, battery operated radio, clock, battery charger, LED lantern, and any other stuff powered by batteries. Plate Size: 29 x 11 x 0.3mm/ 1.14 x 0.43 x 0.012inch(L*W*H), 21 x 9 x 0.3mm/ 0.825 x 0.354 x 0.012inch(L*W*H); Color: Silver Tone. The battery spring plate is consists of an iron plate and spring.