Original Helicoil Professional Thread Kit. Size 1/4-20 This kit is used but still has all the tools needed to repair a thread. Comes with the directions to give you confidence with making the repair. What I like about this kit it comes with a Heavy duty box to store all the tools in one place. This kit comes with 9 .250 in inserts Eleven .375 in.inserts and Eight .500 length inserts , A New HSS STI Tap 17/64 HSS Drill . Install Tool and TBO Rod . Please look at the photos this is what you will receive. Sorry to heavy for First class shipping