... purpose storage shelving adjustable Post OEM size and material SHELVESShelves are welded,then electrolysis Shelf lengths 610,760, 910, 1060, 1220,1370 ... diameter:25.4mm * 1.2mm thicknessRound post foot allowing 40 to 50 mm of adjustment.Standard post heights are 685, 840 ... , non deformable, temperature range-50C-100C )WEIGHT LOADINGShelves are rated to at least 250kgs per tier