materials: Micro-SD to Micro-SD card extension cable uses plastic and FFC. 5.9 inches (about 15 cm) long design to flexible and long enough to extend and read SD cards. Type: Micro-SD to Micro-SD card expansion adapter. (Note: If the Micro-SD end is locked, it make a "click" sound. Please check before printing. If you want to replace the card, please unplug the Micro-SD card first, replace it with a card, and then insert the Micro-SD card again. The card is inserted into the printer slot.) Support 32G card, easy to upgrade navigation, more convenient for your life. Universal compatibility: Widely compatible with for GPS, DVR, LED/LCD screens, mobile phones, and realistic 3D printers, such as -10, 3 Pro, 3, 3 V2, 5, Anet A8, Anet A6, Wait. Fast reading speed: SD card expansion never affects the reading and writing speed of the machine, maintaining the efficiency and safety of the machine. Colour: black Material: plastic Size: Cable length: 15cm Package Contents: 1 x Micro-SD to Micro-SD card extension cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.