Ogee Washer, Finish Hot Dipped Galvanized, Material Cast Iron, For Screw Size 7/8 in, Inside Diameter 1 in, Bottom Outside Diameter 3 1/2 in, Overall Height 7/8 in, Color Silver, Material Grade/Class Not Applicable, Material Quality Standards ASTM A47, Pack Size Small Pack, Rockwell Hardness B156, System of Measurement Inch, Package Quantity 15