Jackshaft/sprocket assembly for 38" snowcasters with roll pin mounted pulleys. Replaces p/n C19733. Earlier models with keyed pulleys and sprockets also require a p/n C31953 pulley to use this shaft. Fits both the current RM38 model as well as the earlier 80 series. Measures 20-3/4" overall so the drive pulley must be install opposite of the original position on 80 series snow casters.