3-fold full-extension design: The drawer slide adopts three-layer contraction design. The total unextended length is 30cm, and the total length after fully extended is 60cm, instead of being extended 60cm, the width is 4.5cm, and the thickness is 1.27cm. It can be directly installed on the side panel, rotating smoothly. High Load Capacity: Drawer slides is made of high quality cold rolled steel. The surface has been electrophoresed and finished. It is wear-resistant, rust-proof, strong and durable, not easy to break. It has a strong load-bearing capacity, and a pair of slide rails can withstand a load of 45 kg. Robust ball bearing guide rail design: The ball bearing design with steel balls can reduce the friction generated when opening and closing the drawer and reduce noise, so that the drawer slides smoothly and quietly. Soft and quiet and shock absorption: The unique roller bearing design can ensure the smooth sliding of the drawer rail, and the wear-resistant rubber pad has shock absorption and noise reduction effects, which can prevent excessive noise caused by the violent closing of the drawer. Easy installation: Install the outer fixed rails horizontally on both sides and fix them with screws, and install the inner fixed rails on both sides of the drawer, align the rails fixed in the middle, then drag them parallel.