54 Pieces Metric Thread Repair Set M2.5x0.45x2D Stainless Steel Thread Inserts with Drill Bit Tap Installation Tool1INCLUDED TOOLS: The thread repair kit includes 50 pieces wire thread repair inserts, an installation tool, a twist drill bit, a tap and a hand punching tool to meet more thread repair needs. 2MAIN PURPOSE: This kit is the perfect solution for repairing damaged or peeled threaded holes, forming a sturdy female thread in soft metal to protect tapping threads from wear and damage. 3APPLICABLE MATERIAL: These thread inserts are suitable for aluminum and other low strength materials to achieve good connection effects, enhance connection strength, and avoid thread damage. 4GOOD PERFORMANCE: Due to its certain elasticity, thread inserts can evenly distribute the load on each thread, eliminate the pitch and tooth deviation between screws and holes, and absorb vibration. 5WITH STORAGE BOX: This kit is equipped with a storage box, which can store these steel wire thread inserts and installation tools, as well as provide good protection and convenient carrying.