Blum Right Lock Devise Tandem Slides is a standard locking device designed specifically for the 563/569 series drawer slides, featuring a right-side lock with side-to-side adjustment of plus or minus 1.5 mm (1/16"). Each drawer requires one right and one left device, with the right device being captive and the left device self-aligning to ensure smooth operation. This product self-adjusting drawer length tolerance and includes a steel base equipped with synthetic, spring-loaded release levers for durability and ease of use. It fits drawers with a minimum inside width of 170 mm (6-11/16") and provides height adjustment of up to +3 mm (1/8"). Model Number: