BMI Surplus offers a huge inventory of Ready to Ship Optical Posts and Bases. New & Used Optical Pins, Optical Posts, Optical Bases & Small Fixtures. Our inventory is updated daily, “In Stock & Ready to Ship Worldwide”. We carry major brands – Newport, Thorlabs, Aerotech, Siskiyou, Precision, Daedal, Ardel, Fisher, Klinger, Oriel, & XYZ Stage. Many of our used optical parts have the performance of new pieces. BMI Surplus also offers discounted pricing on new optical fixtures.