Product Name: Battery Case Fit for: AAA to AA Cell Converter Dimension: 50 x 13mm/ 2.0 inch x 0.5 inch (L x W x T) Material: Plastic Color: Clear White Battery holder converter AAA to AA adapter size. Battery holder converter: switch AAA battery size to AA battery. AAA to AA battery is one piece by one piece. No big deal, just insert AAA battery in converter and it is the same as AA battery. AAA to AA battery holder is a gadget to keep handy, at home, office, camping, etc. Net weight: 60g Package Contents: 16 battery compartments Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.