Cleans and repairs threads without damaging the stud or fastener.Drive it with the socket set you already own.Using a socket allows you to repair studs in circular arrangements which cannot be done with a die stock.Thread Chaser repairs threads in recessed areas.Includes:3/8-16 NC Deep Well ThreadChaser3/8-24 NF Deep Well ThreadChaser7/16-14 NC Deep Well ThreadChaser7/16-20 NF Deep Well ThreadChaser1/2-13 NC Deep Well ThreadChaser1/2-20 NF Deep Well ThreadChaser9/16-12 NC Deep Well ThreadChaser9/16-18 NF Deep Well ThreadChaser5/8-11 NC Deep Well ThreadChaser5/8-18 NF Deep Well ThreadChaserIrwin Hanson 3094102 10-Pc SAE Thread Chaser Set