PS-4502Ball Bearing Slides 45mm Three Section Basket Ball Bearing Slides 1:size:8"-48" 2:Material: Work hardened cold rolled steel 3:Mounting: Side, for frame and frameless construction 4:Load capacity: 45kgs/450mm 5:Finish: Electro-zinc plated ; Color chromate ; Black Chrome 6:Thickness: 1.2/1.2/1.5mm ;1.0/1.0/1.2mm 7:The installation gap: the installation gap between rail is 12.7+/-0.1mm 8:Option: 1" over travel