Newport MKS Optical Rail Carrier, 25.4 mm, for 9731/9732 Optical Rails, M6 C-Bore 9741-M

The 974-M Quasi-kinematic, Quick-release Rail Carrier has a spring-loaded lever that allows it to be locked in place without introducing motion. An 8-32 screw permanently locks the carriers. Model 9741-M has one M6 threaded and one M6 counterbored hole and is 1 inch long. It works with 9731 or 9732 optical rails.