The package includes: 1 pair (2 pieces) of drawer slides, plus mounting screws (about 10 pieces). Material: the drawer guide is made of steel, the surface is electroplated, the workmanship is superb, the load capacity can reach 10kg, and the service life is long. Rail size: length 310mm, width 17mm, height 9.5mm. Ball design : built-in strong steel balls, double row ball design, smooth sliding. Widely used: drawer slides are suitable for wooden drawers with 17mm groove and wooden and steel drawers such as cabinets, wall cabinets, furniture, document cabinets, bathroom cabinets and other furniture. 1 Pairs (2 Pieces) Metal Drawer Slide Rail Rolling Ball Bearing Ball Bearing Slides Drawer Slides Ball Runner 17mm Drawer Runners Length 310mm Specifications: Material: Steel Size: 310mmx17mmx9.5mm Color: Silver Quantity: 12 in total Description: The guide rail is made of high quality steel, the surface is electroplated, and the service life is long.< /p> Soft and quiet, the guide rail runs smoothly, and the drawer can be easily pulled out. Two-way sliding, convenient to use and more space. The load capacity is up to 10 kg. Note: It is suitable for installation on a wooden drawer with a 17mm groove. Suitable for wooden and steel furniture drawers such as cabinets, wall cabinets, furniture, document cabinets , bathroom cabinets, etc. Package includes: 2 * Drawer slides Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there will be some color difference, depending on the physical object received.