This case holds exactly 10 Game Boy Advance cartridges by inserting them into the grooves on the bottom. You can easily remove the cartridges by pushing them out from the holes at the bottom of the case with your finger. Assembly instructions are shown in images 3-4. Material: Black PLA ※ The item will be shipped disassembled as shown in the second image. ※ Game cartridges are not included. 【Discounts for Multiple Purchases】 ・For multiple purchases, small items can be shipped in the same envelope, allowing for a discount of 175 yen per item. Discounts are also available when purchasing this item with other small items. If you wish to purchase multiple items, please leave a comment, and I will adjust the price accordingly before changing the page.