Duck studs that measure approx 10mm in size.
Made from stainless steel, with a rubber backstop.
All the colours are added by hand, once dry, I finish each one with a top coat of a craft base resin to complete the design.
Stainless steel is a low nickel steel It's considered hypoallergenic, and won't tarnish or rust. The studs are 304 grade, which contains approximately 10% nickel.