Description: These are 20 Pairs of battery plates for 18650 button cell battery. Fit for: 18650 battery Battery plate is using in battery case box. This product is for 18650 battery case box only. It is made from metal, has great electrical conductivity, better electric performance. Note: Battery is not included.Specification: Overall Size: 16.5 x 16 x 0.3mm/ 0.65 x 0.63 x 0.012inch(L*W*T) Net Weight: 34g Color: Silver Tone Material: Iron, Nickeling Package Content: 20 Pairs x Battery Spring Plate