The Hettich/Grant 5632 ball bearing 18" drawer slides are a telescopic precision full extension slide with cushioned in and out stops and positive hold-in detent. Made of chromated steel with precision ball bearings, the 5632 provides smooth action and high lateral stability Priced per pair, Screws Sold Seperately. Weight capacity 100 lbs. (45kg) K.C.M.A. Installation Width: 1/2" (12.7mm) Height: 1-13/16" (43.3mm)