♦ T2 (M42x0.75) internal thread on the telescope side♦ 1,25″ receptacle with attached T2 external thread on the eyepiece and camera side♦ Non-rotating - the accessory does not rotate during focusing♦ Minimum overall height is 48.5 mm♦ Adjustment range (travel) is 6 mm with accurate scale for reproducible results♦ The focus position can be fixed using a locking screw