Product Name: Cosmetic Nut Knurling Type; Product Number: EPN-D30RG; Material: Brass; Size: Seat Diameter (A): 1.2 inches (30 mm); Seat Thickness (B): 0.3 inches (8 mm); Screw Diameter M6 x P1.0 ; Surface: Gold plating; Accessories: This product does not include any accessories.