Ball bearing slides longth: 250—700mm Material: Work hardened cold rolled steel Load capacity:25kg/450mm,45kg/450mm Thickness of material: 1.0mm*1.0mm, 1.0mm*1.2mm,1.0*1.0.1.2mm,1.2*1.2*1.5mm Finish: electro-zinc plated with clear or color chromate, black chromate Available