• material：6061-T6 aluminium alloy
• Designed with precision-machined extra wide relief groove, the holders provide stable two-line contact with Ø12 mm posts.
• Magnets are provided at the bottom.

     Equipped with an integral magnetic base at the bottom, the PSB-B series of post holders with base can go all the way to the bottom to meet the minimum requirements for beam height. The holders are designed with grooves on the inner wall to deliver two-line contact with the standard Ø12 mm posts while avoiding sliding and rolling of posts. Precision-machined knurled hexagon thumb screws can be further fastened by a 5 mm hexagon wrench. It is suggested to slightly fasten the locking screws with an L-shaped hexagon wrench; otherwise, excessive force will damage the locking screws. The ball head on the top is made of polyacetal to prevent the posts from being scratched. The holders are provided with a stainless steel base with strong magnetic rings, which offer strong absorption force for locking. Flexible installation on optical tables can also be achieved when these post holders are used together with LDA32 Ø12 mm fork-type pressing plates.