Amazon.com : 1.25 Inch Telescope Focuser, 80mm Refractor Focusing Seat with Toothed Focusing Tube, Compatible with Standard 1.25in Reflector Telescopes, with Locking Screw : Electronics
GSO 2" Crayford Focuser for Refractors - Single Speed (with 86.4mm Telescope Adapter)
Nobody selling Newtonian focusers with rack and pinion? - Reflectors - Cloudy Nights
Buy Event Horizon (EV) 2" Telescope Focusers
Feather Touch® 2.5" Diameter - Dual Speed Telescope Focuser 2.5" Draw tube travel, and Brake. - Lunt Solar Systems