3” Diameter 7/8” Thick Doublet Optical Glass and 5 Other Assorted Sizes

Optical Filter 214BP35, 25MM RING, 4.7MM THICK

Optical Filter Glass, Holmium, 10 mm square, 1 mm thick

Optical Filter Glass 656.4BP0.75, 16.5MM SQ, 1.6MM THICK

Optical Filter Glass KG5 50mmX50mm 2.2mm thick

Optical Filter Glass 641ALP, 25MM RING, 2.4 MM THICK

Optical Filter, Hard Oxide Coating, 600SP, 25mm Ring mounted. 3.4 mm thick

Optical Filter 1100LP, 24.3MM DIAMETER, 2.2 MM THICK