Repair Damaged Threads. Includes 75 Wire Thread Inserts. High Impact Metal Case. The kit has altogether 88 pieces, all made according to professional standard. It has one HSS tap for each size, one HSS drill for each size, 2 insert tools for each size, thread inserts for each size all come complete in a handy storage case.High quality 88 pieces auto engine block damaged thread repair tool kit with metal, Package includes commonly used sizes. Perfect for restoring damaged threads and suitable for engine and other automotive applications. Repair Damaged Threads. It is used for car demolition throttle, seat chair, door lock, fender, suitable for car interior decoration. Suitable for motorcycles, bicycles, maintenance, suitable for removing various shapes of screws and nuts. Auto repair tool combination set, manual hardware tool combination, small flying wrench set, suitable for dismantling throttle, air filter and other small accessories.Package Includes: 3 Installation Tools 3 Break Pin Tools 3 Twist Drills, 1 Hex Key 3 Taps, 75 Wire Thread Inserts 1pc x Storage Case M6X1.0X10.8mm M8X1.25X10.8mm M10X1.5X13.5mm