This swedged throttle linkage tubing is tapped 3/16" (10-32) LH and RH thread. One end of the throttle rod will have left hand threads, and the other end will have right hand threads. Made of 5/16" x 0.049 round aluminum tubing. Tube lengths available are offered in 1/2" increments from 3" through 20" tube lengths. Note: If utilizing a known or working eye to eye length that is required, you will want to allow 1.5" in length for the rod ends added to the tube length (3/4" of length for each end when calculating your eye-to-eye measurement). For example, if an eye-to-eye working length of 11.5" is required, you need to utilize a 10" swedged tube.