Apex Dynamics gearbox. Specifications:Part Number: AE090Ratio: 5:1Ouput Arbor Diameter: 22mmInput Arbor Diameter: 19mmCondition: Good Working - UsedWarranty: 30 DaysApex Dynamics AE090 Gearbox Gear Reducer Reduction Unit 5:1 Ratio PL5090-005SKU: B3$249.99PriceQuantity*Add to CartBuy Now