KIT INCLUDES Drill x1, Counterbore x1, Tap x1, Install Driver x 1, M11x1.5x30MM Inserts x10. with Custom EVA Box. DURABLE STAINLESS STEEL INSERTS Solid steel insert made insert creates stronger internal thread and much stronger and durable than helicoil. PROFESSIONAL QUALITY Special design counterbore is used to cut a recessed lip which takes the flange of the inserts.Makes your work much better. PRECISION RESTORATION Our Thread Repair kit is Used to Repair or Replace Damaged or Stripped Internal Screw Threads. Ideal for a wide range of uses, this kit is particularly wellsuited for engine repairs and various automotive applications. CUSTOM EVA BOX Comes with a specially designed EVA packaging box tailored for the kit, offering secure and organized storage, as well as easy portability.