The NEW KINGWIN KF21 IPF/ULTRA ATA IDE 66/100/133 Mobile Rack is a sleek and durable drive enclosure made of aluminum, with a stylish black color. It features active cooling and dust protection to ensure the safety and longevity of your 3.5-inch drives. This mobile rack is designed by Kingwin, a trusted brand in the industry, and is compact with dimensions of 7.6 inches in length, 1.66 inches in height, and 5.25 inches in width. It is a convenient and reliable solution for organizing and protecting your drives while on the go.