Optical Bench Tool Holders

These are two tool holders designed to be mounted on a standard optical bench (such as sold by Newport or Thor Labs) to hold small screwdrivers and Xcelite Hex Drivers. I used 1" diameter optical post(s) to mount it to the table at the height I needed. The rectangle version has three 1" spaced, counter-bored holes for 1/4-40 bolts for mounting. The round version has one centered counter-bored hole for a #8-32 bolt for mounting. The holes for the tools are only .150" in diameter, but if you