Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number RM1-120 found under Sprocket Wheel by Santa Rosa Mfg Co Inc. The National Stock Number assigned to this part is 3020010420491, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like RM1-120.