Our stackable lens tubes are available in three diameters: Ø1/2", Ø1"and Ø2", providing flexible solutions for a variety of optical setups. Made from durable anodized aluminum, these tubes feature both internal and external threads, allowing for easy stacking and customization of optical systems. Each tube is offered with different internal thread depths to accommodate various optical elements, and one retaining ring is included with each lens tube to securely hold components in place.