135 RPM 1:10 AC Gear Motor Electric+Variable Speed Reduction Controller 60W 110V. Our Products Are Divided into Two Packages.Reduction Ratio: 1:10(10k). Geared Motor Size:139mm 90mm 74mm. Under Different Deceleration Ratio, the Output Shaft Speed Is Different. The Output Shaft Speed Is Equal to the Motor Speed of 1. 0 Rpm Divided by the Deceleration Ratio.