... SpecificationsModel No.B-1482ZDesign Unique V block sliding wheel design Materialtempered.glass,aluminiumGlass8mm transparent termpered glassaluminium profilestain ... *1200*1850.B series (aluminum):1.The pressure wheel type structure design,sliding smooth,can regulate flexible.2.Moveable ... strong bearing capacity.3.Unique V block sliding wheel design with good dustproof function,waterproof well easy ...