1 Pair Sterling Silver Earwires With Coil.  The curved part is flattened for strength and makes the earring easier to hold.  Approx. 18mm, wire is 0.6mm.  Marked '925' for sterling silver. 
These fittings would be great for petite/small earrings, and perfect for earrings for "tweenagers" and younger.

Sterling Silver is 92.5% silver, the balance being a mixture of other metals including Copper, Zinc and Tin. The resultant alloy is harder and stronger than the soft pure Silver.

Although some items are stamped as Sterling silver, STS or 925, none are hallmarked since for items of less than 7.78 gr (¼ Troy ounce) this is not required.