View 2 of BILITOOLS Thread Repair Kit SAE, 131-Piece HSS Drill Helicoil Repair Kit 1/4" 5/16" 3/8" 7/16" 1/2"

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View 1 of BILITOOLS Thread Repair Kit SAE, 131-Piece HSS Drill Helicoil Repair Kit 1/4" 5/16" 3/8" 7/16" 1/2"View 2 of BILITOOLS Thread Repair Kit SAE, 131-Piece HSS Drill Helicoil Repair Kit 1/4" 5/16" 3/8" 7/16" 1/2"