These black hooks & eyes can be used to fasten collars and sleeve cuffs, custom belts, waist stays, and lingerie guards, or anywhere that a larger fastener would be inconvenient. They can also be used for Doll clothes for collectors. They are a popular choice for historic costumers, since they’ve been in existence for centuries. Concealed, flat fastener used extensively on garments to provide a strong closure.Rust proof brass, coated black.Size 0 = 14 sets | Size 1 = 14 sets | size 2 = 14 sets | size 3 = 14 sets | size 9 = 10 sets.