Electra Gear Speedtronics EL-HM-830-20-H1 Gearbox 20:1 Ratio 180TC Hollow Shaft

Frame Size: 180TC
Ratio: 20:1
Input RPM: 1750
Output RPM: 88
Input Shaft Diameter: 7/8"
Output Shaft Diameter: 1-1/2" Dia x 4" Length
Input H.P: 4
Output Torque: 2450 In-Lbs
Does gearbox include breather vent?: No
Gearbox has a hollow shaft fitted with an 1-1/2" dia x 4" output shaft.   
Electra Grove Gear EL Series EL-HM-830.
Gearbox is without the original tag.  New condition.