1. load capacity, long service life: The durable drawer slides have a material thickness of 1.9 mm, density, strength, and a load capacity of 80/120/160 kg. They have passed over 100,000 opening and closing tests, ensuring durability, with a normal service life exceeding 30 years. 2. Installation Requirements You can choose the size of the slides according to the depth of the drawer. *The length of the slide should be the length of the drawer. Installation spacing: 19.5 0.5 mm (each). Note: Mounting screws are not included. 3. Lockable and NonRemovable Can be locked in both closed and fully open positions to prevent sliding and ensure cargo safety. Nonremovable. 4. Easy to Install Multiple mounting holes are reserved, making these drawer slides easy to install. Simply pull the buckle handle from the side while holding the inner fixed rail.