Features 1、Premium Material: Drawer slide is made of premium cold rolled steel sheet material, rustproof, high hardness, not easy to deform, sturdy and durable. 2、Ball Bearing: 2 groups of ball bearings are designed inside the slide rail, effectively increase the load capacity, more noise reduction and mute. 3、Excellent Performance: The surface is treated with galvanized blue sealing process, isolated from direct contact with air and water, and enhances oxidation resistance. 4、Size: The length of ball bearing drawer slide is 500mm/20in, can be extended up to 1140mm/44.88in, left and right installation clearance requirements are 13mm/0.5in. 5、Easy Installation: Detachable buttons on the back, multiple installation holes are reserved to facilitate installation and fixing at different positions. Specification Item Type: Drawer Slides Material: Cold rolled steel sheet Standard: 20in Applicable Drawer Length: ≥500mm/19.69in ( the best match is 500mm/19.69in ) Installation Clearance: Left: Approx. 13mm/0.5in, right: Approx. 13mm/0.5in Maximum Load Bearing: Approx. 30kg/66.14lb Application: Suitable for RV, yacht, household drawer Package List 2 x Drawer Slides 12 x Screw