MECCANIXITY Battery Spring Plate AAA Battery Spring Contact Nickel Plate 21mmx9mm 20 Pcs

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: 21mm x 9mm x 0.3mm/0.83 inch x 0.35 inch x 0.012 inch(L*W*H); Color: Silver ToneIn the package of 20 Pcs x Battery Spring PlateAre 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.