The low-profile CNC manufactured OVL focuser with 10:1 reduction for Newtonian telescopes from 9″ to 15″ aperture accepts eyepieces with 1.25″ and 2″ barrels. It enables a very soft focus setting with high precision thanks to its fine adjustment option with gear reduction. The focus travel is 24mm. Scope of delivery: 2″ Crayford focuser adapter to 1.25″! Power supply and batteries are not included!