This is a 13" Nut/Thread hand riveter Kit with Nosepiece Set (AST1442) and a Stepped Installation and Removal Bit (AST9456)
The AST1442: Patented structure increases power and reduces shock, has a shorter handle with double compound hinges that maximize leverage, Includes hand nut/thread setting riveter and has 6 Interchangeable mandrel/nosepiece sets in metric M5, M6, and M8 and in SAE 10-24, 1/4-20, and 5/16-18
AST9456 - Designed to drill holes for and remove up to 30 different rivet nuts sizes and brands