Product description<br> <br> Specifications:<br> Product Name : Battery Case<br> Materials : ABS Plastic, Metal<br> Body Size : 8 x 3.5x 2.8cm/ 3.15x 1.38 x 1.1Inch(LxWxH)<br> Fit Battery Type : D Size Battery(Non included)<br> Color : Blue<br> Net Weight : 13g<br> Package Content : 4PCS D-Cell Battery Holder<br> <br> Feature<br> This battery holder for D Cell batteries are made of high impact plastic and ideal for heavy classroom use. <br> They can be connected in a series to add voltage or in parallel to add current.