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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. 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 make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 211 hours Hope you have a pleasant shopping experience!