Drawer rail: Side-mount drawer slides built from high grade cold-rolled steel with buffer damping for smooth, controlled operation. Steel ball slide rail: Damping buffer and double spring design provide extremely smooth action with a self-close function to prevent the drawer from slamming shut. Closet extension sliding rail: Includes an anti-off device; designed with a new tooth structure for easy reset and reliable use, reduces risk of damage to contact points during installation and use. Buffer damping slide rail: Full extension with a 3-section stretch to maximize drawer space and ensure efficient access in closet applications. Use scenarios: - Kitchen and vanity drawers where quiet, controlled closing is important. - Wardrobe or dresser drawers to reach items at the back without tipping or tilting. - Office file or desk drawers requiring smooth, reliable, self-closing performance.