Soft-Close Drawer SlidesUsing Double Springs, Pure Copper Buffer, Safe And Quiet, The Drawer Automatically Closes Slowly To Prevent Fingers From Being Pinched.Side Mount Drawer Run Quantity: 1 Pair (Set Of 2) Mounting Screws Included. Length: 300Mm (12 Inches). You Can Choose The Size Of The Rails According To The Depth Of The Drawer. * Slide Length Must Be Drawer Length. Installation Clearance: 12.7Mm (Each)Rust Prevention And Long Service LifeSurface Electrophoresis Treatment. The Electrophoretic Layer Prevents The Air From Directly Contacting The Steel Plate Of The Rail, Passed More Than 100,000 Opening And Closing Tests, They Are Durable, And The Normal Service Life Of The Slides Exceeds 30 Years Removable And SmoothThere Is A Black Plastic Buckle On The Back Of The Slide, And The Drawer Can Be Easily Removed By Pressing ItEasy To Install. Rubber Pad, Avoid Push And Pull Collision During Use, Double Rows Of The Strong Steel Balls Make The Open Drawer Smoother And Quieter.Warm Tip: Products Are Metal Products, Please Protect Your Hands. It Is Recommended To Wear Gloves For Installation. If You Have Any Problems, Please Be The First To Contact Us. - Provide You With High Quality Slides