These brake rods are made from 3/4" x .065" wall chromoly tubing, and feature 7/16"-20 LH and RH threaded tube ends. The LH threaded tube end has a machined line to identify it. Stock length is 20". We also offer custom length brake rods. When ordering a custom length, you'll need to put the overall end-to-end length desired in the note field when completing your order.