Check the listing for details. 21" Drawer Slides, Soft Close, Full Extension Rails With Locking Device (1 Pair). Color: Silver, Condition: New. Listed at 27.65 USD. Enhance the functionality of your cabinets with these 21" drawer slides. The full extension rails with soft close feature ensure that your drawers open and close smoothly. Easily remove and return your drawers back into the slides whenever needed. The zinc-coated galvanized steel helps prevent rust even in high humidity environments. These are heavy duty and will work in both home and industrial settings. *Each pair of slides includes one left and one right slide, two locks, and two sets of screws. Specifications: Load capacity: 77 lbs (35 kgs) Finish: zinc plated Slide Length: 21"(533.5mm) Runner Length: 21.5" (546.5mm) Drawer Length: 21” (533mm) Internal Cabinet Depth Range: 22" (561mm) to 22.7" (577mm)