【Installation note】Suitable for 600-650mm drawers.The space between drawer and cabinet wall need to be 12.7mm each at left and right side,total 25.4mm ( inside cabinet width - outside drawer width= 25.4mm )一 For installation,make sure the two runner rails parallel to each other,and make sure the drawer portion runners parallel to the cabinet portion runner and in the same level. without mounting screws included,you can purchase different M4 screws according to your specific installation scene. 【MAXIMUM LOAD CAPACITY: 64 kg】The runners is made of 1.5mm High - tension cold-rolled steel plates,it will keep your drawers stable and safe even carrying up to 64 kg heavy weight items,which take 100,000 times of push-pull tests full loaded without damage. The shorter the runner,the heavier the weight load. 【Anti-rust & Smooth work 】The anti-rust ability and oxidation resistance of our runners is superior to the others because of the special galvanized blue sealing surface treatment; With dual industrial grade bearing ball inside,the drawers runner smoothly even though carrying heavy items; With a rubber crash pad on,which is a wear-resisting and impact-resistant device,the drawers runner quietly without collision noise. 【3-fold full extension】 Runners width:50mm- length:600mm--Fully extended length: 1200mm, “The 3-fold full extension”enable the slides to fully extend, so the drawer can be pulled out completely, which allows for the entire drawer's storage to be accessed easily; Application range:Goods shelf, Cabinets, Industry-used drawer, RV, Truck, Vending machine, etc. 【Detachable】There is a plastic buckle on the back of the runner rail, by pressing it,the 3rdtrack(the narrowest section) can be separated ,which means the drawer can be installed and detached easily by your will;, Manufacturer: Foshan yenuo Hardware Co., Ltd