Baader's 1.25"/T2 Focusing Eyepiece Holder features a female T / T2 thread on one side for attachment to T-threaded accessories. It has a 1.25" eyepiece holder on the other side. This holder features dual clamp screws and non-marring internal compression ring. The total length of the adapter can be varied via a helical focusing mechanism. The min-max height of this item is 28.7mm - 35.3mm (1.13" - 1.39"), so it has a focus travel of approx. 6.5mm (0.26"). Latest version with focus lock screw.