The Sealey 42 Piece Re-Threader Master Kit is a comprehensive thread repair solution designed for restoring damaged threads on bolts, studs, and threaded components. This professional-grade kit combines precision taps, dies, and thread restorer files to tackle a wide range of thread repair and restoration tasks across both metric and imperial fasteners. The taps and dies are specifically engineered for chasing out damaged threads and removing nicks and burrs without undercutting sound threads, preserving the integrity of salvageable components. This makes the kit ideal for maintenance workshops, automotive repair, and engineering applications where thread damage is a common occurrence. The included thread restorer files work on external threads of any diameter, accommodating both right-hand and left-hand configurations to handle diverse repair scenarios. With comprehensive coverage spanning metric sizes from 6mm to 12mm, plus National Fine and National Coarse imperial threads up to 5/8