Diameter of the studs: 7mm (9/32 inch)
Thickness of the studs: 6mm (7/32 inch)
Materials: color pencils, silver, and surgical steel
Colors: England White, England Red, silver
These are currently available at my etsy jewelry shop:
Colors for the country you support are also available, please email me at firstname.lastname@example.org, and I will get them ready for you within 48 hours.