Aluminum Tread Plate; 1,Alloy: 1x,3x,5x ,8x series 2, ... ,H19,H32, 3,Pattern: five bar, finger,diamond; Aluminum Tread Plate Pattern: five bar, finger,diamond... Alloy: 1 series (1100, 1050, 1060, 1200 ... questions,pls don't hesitate to contact with us Bellasinox Aluminum Tread Plate