Base Lab Tools flexure grip post holders are designed to hold 1/2 in. optical posts and are available in sizes ranging from 1 in. to 6 in. long.

The flexure grip design outperforms common screw against post designs. Each post holder has a 1/4-20 mounting hole in the bottom and a thumbscrew drive for hand tightening. In tight spaces, the thumbscrew can be replaced with an #8-32 cap screw. 

The unibody construction of these flexure post holders provides superior performance over multi-part post holders.