Thank you for selecting Aerospace Aviation 360 for TL21A by Fluke Electronics Corporation under Test Connectors Probes And Testleads. We are proud to be an ASAP Semiconductor owned and operated website, a leading distributor of aviation and aerospace part numbers like TL21A. To help us better understand your parts requirements, please fill out an RFQ form for part number TL21A with your details, and our customer executive will respond to your RFQ in 15 minutes or less.