Berta 21 inch Soft Close Full Extension Under Mount Drawer Slide with Screws (3 Pairs)

Installation Type- with screws (included in package). The rails are made from cold-rolled steel and have slide length of 21 inches. Under mounting and bears load of 100 lb. Ball bearings enable smooth and quiet functionality. 3 pairs 21 inch under mount drawer slide, 3 pairs locking device, 3 pairs plastic rear bracket and installation screws.