Diameter - 20-30mm, 30-40mm, 40-50mm Thickness- 10-15mm Packaging Typ - Carton Technic - Black Oxide, Hot Dip Galvanized, White Zinc Plated Usage - Automobiles Use Specialities - Accuracy Durable, Auto Reverse, Hardend & Temper Dimension (LxWxH) - 250x130x195mm