Feature: Fit for use with 3/16 inch steel, poly coated, or copper brake lines. The nuts are metric 1/2"-20 threads (regular 3/16 inch tube fitting size). Made of durable Galvanized Steel to prevent rust and corrosion resistance. Please confirm the size of the details according to the picture before purchasing Specification: Color: Bronze Tone Material: Galvanized Steel Thread Size: 1/2"-20 Product Size: 16 x 14mm / 0.63" x 0.55"(L*D) Fitment:Universal for cars, SUVs, motorcycles, ATVs, trucks, etc.Package included: 10 x Nuts