Comparison : Item # R16-2T4-FSI-139-221-0.008, FSI Type – Standard Ground Ballscrews
Item # R16-2T4-FSI-189-271-0.008, FSI Type – Standard Ground Ballscrews
Item # R16-2T4-FSI-239-321-0.008, FSI Type – Standard Ground Ballscrews
Item # R16-2T4-FSI-289-371-0.008, FSI Type – Standard Ground Ballscrews
Item # R16-2T4-FSI-389-471-0.008, FSI Type – Standard Ground Ballscrews