45mm ball bearing slide 1.Material:steel 2.Finish: zinc 3.Thickness:1.0*1.0*1.2mm,1.2*1.2*1.5mm 4.Length:250mm to 600mm 45mm ball bearing slide1.Material: Hardened cold rolled steel2.Finish: zinc plated,3.Thickness:1.0*1.0*1.2mm,1.2*1.2*1.5mm4.Length:250mm,300mm,350mm,400mm,450mm,500mm,550mm,600mm(700mm&800mm optional)5.Merit:full exention,smooth sliding telescopic 45mm Ball Bearing Slide