Our 25 mm aluminum optical rails can be used to build three-dimensional mechanical structures. Accessories include 25 mm corner cubes and brackets, T-nuts, low-profile channel screws, breadboard mounting accessories, and rail joiners. In addition, we offer optical enclosures built upon the 25 mm rail standard, laser safety panels for enclosures, enclosure accessories, and do-it-yourself tools like taps, tap guides, and drill guides for home-built 25 mm rail constructions.