DescriptionThis item is a pack of 5pcs battery case, which has slots for 2pcs AA batteries. With spring clip design, you can easily to put the battery in it. It can be used to provide power for monolithic system, system 2WD mobile robot etc.Features- Color: Black. - Material: Plastic and metal. - Size: 57 * 32 * 15mm. - With wire connector, fit for 2pcs AA batteries. - Spring clip design, you can easily to put the battery in it. - For monolithic system, system 2WD mobile robot etc.