Our Post Holders with Magnetic Swivel Base provide a versatile and stable mounting solution for optical setups. Available in two diameters—12 mm and 12.7 mm—the 12.7 mm versions feature an indented groove near the top for easy identification. Each post holder is equipped with a swiveling clamping fork that rotates 360°, allowing for flexible positioning. The clamping fork includes an M6 clearance slot for effortless alignment, while the strong magnetic base ensures secure attachment to optical tables and breadboards. They are available in heights ranging from 30 mm to 150 mm, accommodating various experimental setups with precision and convenience.