TEC Tube Rings are extremely lightweight and durable, with a set of two rings for an APO140FL F/7 weighing under 750g. The Tube Rings are CNC machined for clean edges with black anodized aluminum that is scratch resistant. They are outfitted with adjustable stainless-steel latches and are able to fit the TEC Dovetail Plates, Losmandy Plates, and AP Plates for secure mounting. Each Ring contains an upper base, an adjustable latch, and a lower base. The upper base of the Tube Rings also connects to the TEC Carry Handles for easy transport.

Tube Rings come with the purchase of the APO250FL F/8.8. Additional sets of Tube Rings are available for purchase.