Boston Gear F621B-5-B5 Inline Helical Gearbox 5:1 Reducer 2.5Hp 350rpm 56C

Frame Size: 56C
Ratio: 5:1
Input RPM: 1750
Output RPM: 350rpm
Input Shaft Diameter: 5/8"
Output Shaft Diameter: 3/4"
Output Shaft Orientation (Left, Right, Inline): Inline Parallel
Input H.P: 2.55
Output Torque: 442
Does gearbox include breather vent?: Plug
New old stock surplus item from spare parts storage.  Has some shelf wear.