Hi, welcome to our online shopping! We provide 11 sizes for mild steel round plate: 7) 3" ROUND PLATE 8) 3 1/2" ROUND PLATE 9) 4" ROUND PLATE 10) 5" ROUND PLATE 11) 6" ROUND PLATE For more information, please feel free to contact our customer service chat during working hours. Working hours: Mon-Sat 9am-5pm, excluding public holiday & Sun Note: Pictures are for reference only. Actual products may vary. Colours and sizes based on actual products. : Thickness size might be various for every batch, please contact us for latest thickness size.