This is 0.015" Music Wire from K+S.

FEATURES: Steel construction Silver in color Ideal for a variety of uses such as crafts, jewelry, model cars, boats, trains, etc.

INCLUDES: 4 Pieces of Music Wire

SPECS: Length: 12" (305mm) Diameter: 0.015" (0.38mm)  

BOX DIMENSIONS: 1.13" W. X .13" H. X 15.00" L. BOX WEIGHT: .02 LBS.