Right Angle Inline 1:1 Gearbox Low Torque Manual Power 10mm Shaft 40mm Fitting

New Old Stock Surplus Item from Spare Parts Storage.
Shaft is 10mm in diameter and holds a 31mm OD, 20T gear cut for right-angle power transmission.
Housing is made of aluminum. The shaft is made of steel.
Gearbox is likely made for applications with manual power transmission.
Flat end of shaft inside gearbox measures 7/64" across.
Approximately 5.5" from end of shaft to center of gearbox.