Pn# - FPM08 - 20pc 3/16" And 1/4" - Zinc Plated Tube Nut Fitting Pack - (11) 1/2-20 TN13, (5) 7/16-24 TN12, (4) 3/8-24 TN13. All The Sizes To Plumb A GM Truck From 1999-2007 (NEW BODY STYLE FULL SIZE TRUCK) This set is designed for a 45-degree double flare. This set has everything you need to get started on plumbing new brake lines on your car or truck. All parts are Zinc Plated Color Correct. This set is manufactured by Inline Tube the leader in brake plumbing products. 3/16" 1/4" O.D.