Power Components 3A 2.5SQ1-1/4HK Power Lift Actuator 1500lb. cap. powerhead

Ratio: 2:1 
Input shaft diameter: 1-1/4" sq 
Output shaft diameter:1-1/4"sq 
Vent Not included
All gear reducers must have a breather vent. This allows for expansion and contraction of the air within the casing as a result of temperature changes. If a gearbox is used without a breather, oil leakage and seal failure may result. Gear boxes may or may not have oil or breather. Buyer is responsible to ensure gear box is properly vented and has proper oil and oil level prior to use.