- Made of alloy material, durable. - Fixing component, industrial and construction fasteners. - The platen nut of this angle grinder cutting wheel is suitable for angle grinders, polishing machines, chainsaws, etc., - and is widely used in maintenance and manufacturing Specification:Material: AlloyFinish: Zinc platedInner Diameter (Silver): M10Inner Diameter (Black):10mm / 0.39"Thickness (Silver): 7mm / 0.28"Thickness (Black): 8mm / 0.31"Outer Diameter: 30mm / 1.18" Package Content: 2 Set x Angle Grinder Flange Nut Note:1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.