Advantage:Our wood center guide tracks are made of birch wood, sturdy and durable, enough for long-lasting use.Stable and firm, not easy to loosen, bear large tensile force, and will not easily damage the drawer.Center mount drawer slides provide a smooth and seamless gliding motion for your cupboard drawers.The Interlocking dovetail design reduces the chance of drawers tipping when sliding.Specification:Material: birch woodColor: BrownSize: Length: 20 inch (50cm); Width: 9/5 inch (4.7cm) ; Height: 3/5 inch (1.6 cm) Package Included: 1 Set x Wood Center Mount Drawer Slide.