Boston Gear WA73218006 (?) 1800 Gear Ratio Speed Reducer 700 Series .19 H.P.
This speed reducer is used but in good condition. The model number is hard to read but it looks to me to be WA73218006 but that last number could be an 8 or a G.
The larger shaft looks to me to be 1-3/8" in diameter and the small shaft looks to be 5/8" in diameter.
Input H.P.: .19
Output Torque: 3750 LB. IN.
Ratio: 1800 0S
R5-2
fdk 80413198
80111248