Aluminum Tread Plate; 1,Alloy: 1x,3x,5x series 2,Temper:O,F, ... ,H18,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