The JJC MCH-STK6GR Memory Card Holder is made of high quality ABS material, sturdy and durable. It can hold 2 SD cards, 4 MSD cards and 1 USB 3.0 card reader. The holder can effectively protect cards from dust and loss and your scattered cards can be held neatly. The snap joints inside the card slots secure your cards and protect them from falling. The holder is easy to use and can be marked for the memory card patterns on the back. You can insert the card into the slot correctly and quickly according to those patterns when using. The patterns also can be marked with information about the corresponding cards for bettering organizing your cards. Besides that, the holder comes with a USB 3.0 high speed card reader with 3 ports: USB 3.0, Micro USB 2.0 and Type-C USB 3.0. Plug and play design, no drivers required. It can access to SD and MSD cards simultaneously. This credit card size holder is lightweight and portable. You can put it easily into your pocket, handbag or backpack. The JJC MCH-STK6GR memory card holder with integrated design of memory card slots and card reader slot will become a good partner for your card organizing and data transferring.