Spanner Wrenchs are used to tighten and loosen the posts that are directly attached to the optical table. Please be careful not to overtighten during use.
Spanner Wrench is specially designed for tightening the post with its wide end with a diameter of 25.4 mm. At the same time, you can use it to tighten or loosen the 12.7 mm diameter post with its narrow end. This special wrench makes it easy for you to tighten or loosen the post directly into a gear hole when installing them.