The Tyrannosaur Tightener was designed to replace the factory shift linkage knuckle and eliminate the factory roll pin found on the Honda B/D Series Shift Linkage. If you had tried to remove your shift linkage in the past, you would know that it is the hardest piece to remove. The rubber bushings in the factory shift knuckle rotten and become brittle overtime, creating slop in your shift linkage. By using this Tyrannosaur tightener, you kill two birds with one stone, taking care of both issues that are very common with the B/D Series shift linkage.
See video below for installation.