LENSTEK offers a variety of lens tubes and accessories in SM05, SM1, and SM2 thread standards, compatible with Ø12.7 mm, Ø25.4 mm, and Ø50.8 mm optical components. The product range includes fixed and adjustable lens tubes, adapters, retaining rings, spanner wrenches, dust caps, and more, suitable for constructing compact optical systems, light shielding, and optical path adjustments.