Base Lab Tools offers industry standard lens tubes with internal 2.035-40 thread for pre-mounting optics. These lens tubes include a 2.035-40 retaining ring for securing Ø2in and Ø50mm optics within the tube. There are also a wide variety of adapters available for mounting other size optics, fiber and more. Each lens tube has 0.12in of external 2.035-40 thread so they can be attached together or mounted in other internally threaded 2.035-40 mounts.
These lens tubes are made of RoHS-compliant, corrosion-resistant, black anodized, aluminum alloy.