Baader Hyperion fine tuning ring 14mm/M48

Hyperion fine tuning ring 14mm for Baader Hyperion eyepieces and M48
Extension to 2″ outside diameter.
Extension ring with M48 x 0.75 filter thread on both sides and a
Overall length of 14mm. The adapter is made of aluminum and black anodized.
Increase in magnification of the Hyperion eyepieces by approx. 23%.
Screw the extension ring between the lower element of the
Hyperions and the eyepiece body and the focal length of the eyepiece
shortens by approx. 23%. The increases by the same value
Enlargement.
Thread: M48x0.75 on both sides (male/female)
Length: 14mm
Length M48 internal thread: 3mm