Gobrico Drawer Slides Furniture Hardware 20-inch 100 lb. Hydraulic Soft Close Full Extension Ball Bearing Runners 3Folds 2Pair Length:20"(500mm),Thickness:1/2"(12.7mm), Width:45mm,Load capacity:100LB Mounting:Side/Rear Mount with Brackets, Material:Cold Rolled Steel Soft/Self Close,Ball Bearing,Side Clearance:1/2 inch Includes left and righ hand slides,installing screws.Side/Rear Mounted Brackets are not included Hydraulic Soft/Self Close feature to slowly draw the drawer closed without slamming shut