Quality Plastic Material, Lightweight, Durable to Use. Chassis Hard Drive Rails Size: 14.5x1.2 cm / 5.71x0.47 inch. Suitable for most hard drive installations. Note: Applicable to the chassis of most slide rail hard drives, but it is not guaranteed to be suitable for your chassis. Due to variations in chassis installation, there is no uniform standard, and the store cannot access these hardware components, so no installation advice can be provided. Color: Black Material: Plastic Package Contents: 5 Pairs x Hard Drive Rails Only the above package content is included; other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is +/- 1-3 cm. Product Notes: Please allow a little manual errors.Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please confirm acceptance before ordering. About Shipping: Please ensure your shipping informations are correct to avoid delivery issues. All orders are shipped within 3 days after payment. Delivery usually takes 8–12 days, The specific delivery time is depend on circumstances. If you have any questions during your purchase, feel free to contact us. We will respond you within 211 hours.