Head block tether assemblies were designed for microdialysis. Always use a counter-balanced lever arm to remove slack in the head block tether and to give your animal the greatest possible freedom of movement.
This large lumen tether can accommodate two standard microdialysis probes. A 3/4" slotted screw attaches to the animal's skull with dental cement. A blade on the end of the spring tether slides into the head mount screw and is secured with a knurled tubular nut.