PS-3501ball bearing drawer 35mm Three Section Ball Bearing Drawer Slides 1:Feature:three section2:size:8"-24"3:Material: Work hardened cold rolled steel4:Mounting: Side, for frame and frameless construction5:Load capacity: 35kg/450mm6:Finish: Electro-zinc plated ; Color chromate ; Black Chrome7:Thickness: 1.0/1.2/1.2mm8:The installation gap: the installation gap between rail is 12.7+/-0.1mm9:Option: 1" over travel