New 1.25 inch Non-Rotate double Helical focuser 0.1mm scale for T-mount Adapter
High Precision double helical focuser for guider scope / finder scope Interface
Interface :1.25 inch with M42*0.75 male thread
Primary mirror interfaces; M36X1
Focusing stroke; 1CM
Minimum length; 43MM
Weight; 95 g
it is one part rotate to make this adapter long or short to focus,and eyepiece holder did not rotate,thankyou!.