Blum, T51.1700.04, Drawer Slides, TANDEM, Cabinet Hardware, Locking Device, TANDEM Collection TANDEM Plus Standard Locking Device Set Locking devices allow easy insertion and removal of drawers. Once the locking device is installed, simply place the drawer on runners and close and the devices will automatically connect. This prevents the door from being removed unintentionally, and a simple squeeze of the orange release lever will allow the drawer to detach. TANDEM brings together all of the features, innovations and benefits that Blum has developed since first making drawer runners in the early 1960's. The first time you open and close a fully loaded drawer, you'll quickly realize that TANDEM is a runner system that is unmatched in quality, style and running action. Features: Set of right and left handed devices Tool-free drawer height adjustment ( 1/8) For use with standard applications Captive right device and /-1/16 self-adjusting tolerance on left device Self-adjusting drawer length tolerance Zinc die-cast with synthetic, spring-loaded release levers Blum, Inc. is a leading manufacturer of functional hardware for the kitchen cabinet and commercial casework industries specializing in lift systems, concealed hinges and drawer runner systems.