Optosigma crossed roller bearing linear stage with 1/4-20 and 6-32 tapped holes and micrometer.

It looks just like the drawing except it is missing the 4 inner tapped holes.

Very clean with no marks.

Sale is for one unit.

I combine ship to keep costs down. If you are an international buyer, be aware that ebay's new international shipping program is for ONE item type only. I cannot combine ship different items if you use it.