Base Lab Tools introduces our extremely stable & economical flexure grip post holder. These post holders provide superior performance at an unbeatable price. The flexure grip design outperforms common screw against post designs in both price and performance. Each post holder has an 1/4-20 mounting hole in the bottom and a thumbscrew drive for hand tightening. In tight spaces, the thumbscrew can be replace with an #8-32 cap screw. We believe once you try one of these post holders, they will become a standard piece of equipment in your lab.