Reduce the height of GRS MicroBlock or MicroBlock XL jaws by 9.5 mm.
Great with ID Ring Holder (856-0209). Same pin holes and threads as standard 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.
Made in USA.