Liberty D90021C-ZP-R full extension drawer slides provide smooth and quiet operation for your drawers. They feature a weight capacity of 75 lbs. dynamically and 100 lbs. statically, making them suitable for a variety of applications. The slides are adjustable to accommodate different drawer thicknesses and feature a self-closing mechanism that engages 30mm before the closed position. They are easy to install and come with all necessary hardware, including a front locking device kit and universal rear mount bracket.