This handy case will hold ten R6/AA/UM3 batteries for the Mini 4WD cars, and rearrangement associated with the interior enables various designs: four R6/AA/UM3 with ten R03/AAA/UM4; or seven R6/AA/UM3 with five R03/AAA/UM4. The way it is is molded in somewhat opaque synthetic, with various logos printed regarding lid. Measurements: 90mm x 120mm x 22mm. Material: Polypropylene (PP)