Specifications:Made of high-quality steel, it is durable and anti-rust.The soft-close function prevents you from disturbing noise when you push and pull,and it is not easy to get your hands caught.The steel ball bearing action is very smooth and quiet when close and open.It is suitable for drawer, computer desk tray, cabinet, cupboard, etc.Item Name: Slide RailMaterial: SteelQuantity: 2PcsFeatures: Easy to Install, Durable, MuteSize:01 (10 inch): 25cm x 4.5cm x 1.3cm/9.84" x 1.77" x 0.51" (Approx.)02 (12 inch): 30cm x 4.5cm x 1.3cm/11.81" x 1.77" x 0.51" (Approx.)03 (14 inch): 35cm x 4.5cm x 1.3cm/13.78" x 1.77" x 0.51" (Approx.)04 (16 inch): 40cm x 4.5cm x 1.3cm/15.75" x 1.77" x 0.51" (Approx.)05 (18 inch): 45cm x 4.5cm x 1.3cm/17.72" x 1.77" x 0.51" (Approx.)06 (20 inch): 50cm x 4.5cm x 1.3cm/19.69" x 1.77" x 0.51" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:2 x Slide Rail