Reduce the height of GRS MicroBlock or MicroBlock XL jaws by 9.5 mm. Great with Inner Diameter Ring Holder (see our 856-0209). Same pin holes and threads as on the MicroBlock jaws. Thread nut is included. Ideal for microscope users. Diameter when together is 50mm (2") and 13mm (½") in height. Weighs approximately 0.5lbs.
| Brand | GRS® |
| Country of Origin | United States of America |
