Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number LUS10550-B TEL-2105-15 found under Chain Roller by Dynaco Usa Inc. The National Stock Number assigned to this part is 3020016177909, 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 LUS10550-B TEL-2105-15.