This newly designed 1.25" Orion Basic Rack-and-Pinion Focuser offers all the precision most telescope users will ever need. Now with improved universal base made of durable plastic to fit Newtonians of 4" aperture and larger. Aluminum eyepiece holder ring. Dual knurled focus knobs turn smoothly even with gloves on. A fine upgrade for a lower-quality focuser, or a worthy component for a home-built telescope. Accepts 1.25" eyepieces and has insert for .965" eyepieces. Has 1-15/16" of focus travel. Racked-in height 3-1/4".

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.