Product Description:
T-Tube is threaded for use with 2 inch Telescope eyepiece and astrophotography filters. 
Made of machined, anodized aluminum
Threaded for Standard 2" Eyepiece Filters (48mm). Fully Baffled to reduce reflections.
Telescope Interface: 2 Inch
Camera T-ring Interface: M42x0.75mm
Front Sleeve Internal Thread: M48x0.75mm
End Sleeve External Thread: M42x0.75mm
Middle Sleeve External Thread:M54x0.75mm
Material: Metal

Package Include:
1 x 2 Inch T-Tube Adapter

This link page product does not contain camera T ring