Threaded M54 x 0.75 Telescope Extension Tube, Black Aluminum Coupler for Imaging Distance Adjustment in Threaded Systems

Features: Threaded Imaging Connection: M54 x 0.75 Male and female threads form a clean spacer interface that links Telescope train components while keeping alignment secure during setup.

Spacing Control Support: This extension adapter adds threaded distance in an imaging setup, helping set back spacing while keeping the same interface, finish, and shared accessory story.

Black Aluminum Build: An anodized aluminum body pairs with a matte interior texture to support a stable accessory feel while helping reduce internal reflections around the Telescope side optical route.

Compact Optical Profile: The spacer keeps a round shape with an outer diameter of 5.65Cm/2.22Inch, making it easy to integrate into imaging layouts where consistent threaded distance matters.

Single Piece Per Option: Each selected option includes a single extension adapter, giving buyers a straightforward way to choose the spacing amount needed for Telescope train connection and tuning work.

Specifications: Component: Aluminum Type: 3mm, 5mm, 7mm, 10mm, 12mm, 15mm, 20mm, 30mm Size: Approx.5.65cm/2.22inch; Thickness Options: 0.3cm/0.11inch, 0.5cm/0.19inch, 0.7cm/0.27inch, 1.0cm/0.39inch, 1.2cm/0.47inch, 1.5cm/0.59inch, 2.0cm/0.78inch, 3.0cm/1.18inch Internal thread of interface: M54X0.75mm External thread of interface: M54X0.75mm Quantity: 1 Piece

Package Includes: 1 Piece Telescope Extension Tube

note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.