• Material: 304 stainless steel;

     The stainless steel post holders with rotatable base is used to clamp the standard Ø12 mm posts. The 304 stainless steel greatly improves the stability. The post holders are designed with extra wide relief grooves on the inner wall to deliver stable two-line contact with the Ø12 mm posts while avoiding sliding and rolling of posts. The GYBSNG9 precision-machined knurled hexagon M6 thumb screws with plastic caps can be fastened by a 5 mm hexagon wrench. Placing an optical mount at the required position on the rotatory base, and rotating the rotatory base to align the mount with mounting holes on the optical table. The post holder bases include magnets at the bottom, which offer clamping forces for rough optical alignment before the final locking. The hollow bases allow the Ø12 mm posts to contact the optical tables, thus maximizing the height adjustment of posts.