Electra Gear EL-HM-826-60 Speedtronics Gearbox 60:1 Ratio 29rpm 56C Hollow Shaft

Frame Size: 56C (6-1/2" Flange OD)
Ratio: 60:1
Input RPM: 1750
Output RPM: 29
Input Shaft Diameter: 3/4"
Output Shaft Diameter: 1-1/2" Dia x 3"L
Does gearbox include breather vent?: No
Gearbox has a hollow shaft fitted with an 1-1/2" dia x 3" output shaft.   
Electra Grove Gear EL Series EL-HM-826.
Gearbox is without the original tag.  New condition.