?Installation note?Slide length:12"(300mm)--Fully extended length:24"(600mm).Quantity: 1 pair(2 pieces)?Suitable for drawers with an internal depth of ? 12"-14".The space between drawer and cabinet wall need to be 0.5in each at left and right side,total 1in ( inside cabinet width - outside drawer width= 1in ),Mounting screws included. ?MAXIMUM LOAD CAPACITY: 100lb ?The slides is made of 1.5mm High - density cold-rolled steel plates,it will keep your drawers stable and safe even carrying up to 100 lb heavy weight items,which take 100,000 times of push-pull tests full loaded without damage; It is designed with steel ball bearings on both sides,which keep sliding smooth and quiet under full load, and also effectively Increase the load-carrying capacity of the slides. ?Safe For Children? slowly close without slam shut mechanism effectively reduce the risk of bang shutting babys finger; With slot and automatic back locking, you need to pull a little harder to open the drawer,which not only prevent the drawer from sliding open casually and also make the drawer hard to pull out for a baby. Both of which make the drawer become safe for your children and create a warm and safe family environment for you. ?Soft/Self smooth Closing?The drawer slides is equipped with pure copper core hydraulic damper that allows the drawer to close slowly automatically without slamming shut. Just need push the drawer closed, walk away, leave the drawer self-close the last few centimeters automatically and slowly without bang shut loudly, which make the act closing the drawer become soft and comfortable and quiet. ?3-Fold full extension Detachable ?The 3-fold full extensionenable the slides to fully extend, which designed to extend your drawer to a full open position so that you can access anything in the drawer without reaching under the lip of your cabinet; Detachable:There is a plastic buckle on the back of the slide 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. ?Installation note?Quantity: 1 pairs(2 pieces)Slides width:1.77"(45mm)-Slides length: 12" (300mm)--Fully extended length: 24"(600mm).Choose the size of the rails according to the depth of the drawer,the length of drawer?length of slides,the tolerance 0.7in/20mm-1in/30mm is okay. The space between drawer and cabinet wall need to be 0.5in each at left and right side (total 1in); One set includes a pair of slides with mounting screws included.