Description Superior Titanium-coated Topstitch #100/16. Guaranteed to last 5-8 times longer than regular needles. Pack of 5. Recommended for piecing and quilting with fine threads. Since these new needles have an ultra thin coating of titanium nitride they will stay sharper longer. Topstitch needles have a larger eye and a deeper groove. Good for piecing, embroidery & applique using finer threads.