Specification: Product Name: Brake Line Fitting Kit Material: Iron plating zinc Color: Zinc plating-coloring Size: 10mm x1mm Thread: Male Quantity: 5pcs / 20pcs Features: -Brake Line Fitting Kit for 3/16" copper brake pipe. -Zinc Coated for corrosion resistance. Package includes: 5 / 20 x 10mm x1mm Male Nuts Note: 1.We provide clear pictures, measurements where possible. Please check as much as possible to make sure the item is the one that you need. 2.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm) 3.There are no instruction included!Professional Installation Is Highly Recommended!!If you want to know how to use or install it,please contact us by Email.We will provide help as much as possible.