These curved, brass safety pins from Prym are particularly suited for quilt and patchwork projects! They are extremely rust-resistant and can therefore remain in your fabric for a longer time as well. Their curved shape allows it to easily pierce and affix several layers of fabric. The pins also have a high level of fastening force when opened and closed frequently, since the brass used has balanced spring force. Prym provides the golden pins in sizes 27mm and 38mm.