TECHSPEC® Thread Adapters are utilized for matching posts to optic mount threads or to table threads. Each Adapter is laser engraved with thread values for easy integration. Adapters for the Bottom of Posts (or even Post Holders) are easier to work on tables than typical SHSS. TECHSPEC® Thread Adapters threads are all male and have a stainless steel construction. The adapters are interchangeable with post adapter studs and can be used on the top or bottom of posts.