Dayton Superior A81 Jahn "A" Bracket is fabricated from high-strength steel with a cad-plated eccentric and painted body. The 5/8" take-up of the eccentric compensates for minor lumber variations in thickness. The A81 bracket can be utilized to hold a single horizontal wale or a single vertical stud with any type of wall form; round, curved, battered, beam and/or columns.