*Plastics and Spray oil*Include the line of USB2.0*Mirco SD/SD/MMC/CF/SDHC/M2/MSP/MS/SIM card reader all in one*High speed card readerWe are a computer fitting company in Shenzhen. We offer mouse, keyboard, Hub, USB kit, card reader and notebook cooler. All of our products are high quality with reasonable price. And our products are with one year warranty time. We promise here" IF ANY QUALITY PROBLEM, WE WILL CHANGE NEW ONES FOR FREE DURING OUR WARRANTY TIME." (Man made risk is not included). You are welcome to visit our web to kown all of our products.