We are here to assist you! The product image is the actual item you will receive unless otherwise noted Variety of Size Options: Six different size combinations allow for flexible customization to meet diverse storage needs. After testing, the number of times the slide rail is opened and closed is more than 150,000 times. The 3rd fold of slide is detachable, which is convenient for installation and maintenance like cleaning the drawer. But screws are mounted on both sides of the cabinet. And then pull up the drawer. Heavy Duty Drawer Slides Refer to the video attached to the link for specific installation details.) You can squeeze two red handles on the locking mechanism in the meantime. Durable and Sturdy: Steel construction ensures long-term stability and durability, withstanding the wear and tear of everyday use. The maximum thickness of the side panel of the applicable drawer is 16mm (5/8″). Bottom Mount Drawer Slides AOLISHENG 1 Pair Undermount Soft Close Drawer Slides 9 12 15 18 21 24 Inch 80 Lb Load Capacity Full Extension Ball Bearing Hidden Bottom Mount Rails Locking Devices Concealed Runners 21 Inch 1 Pair Drawer Slides Undermount 【Purchase instructions】 This is undermount soft close drawer slide. 【After Sales Service】Our service tenet is: customer first. 【 Undermount & Soft Close 】 Drawer slides are placed on the bottom of the drawer. 【Stable & Smooth】 AOLISHENG undermount drawer slides has excellent anti-rust and mute function, and there are two rows of solid steel balls inside, which can bear weight and be quiet. Any quality or installing problem please feel free to contact us. Undermount Soft Close Drawer Slides Soft-Close offers high value, simple installation, and outstanding durability, making it the ideal entry-level choice.