Thread Repair Kit: Your Reliable Repair Assistant.This thread repair kit is built to last, featuring high-quality heat-treated steel drill bits and taps, along with 304-stainless steel thread inserts for superior strength and durability. The set includes 131-pieces, making it ideal for a wide range of engine repairs across various vehicle models. Complete with SAE-sized accessories, it covers most component specifications and meets daily repair needs. Suitable for repairing a variety of materials, this kit is perfect for applications in mechanical and automotive repairs. It also comes with a convenient storage case for easy organization and transport, enhancing work efficiency. Color: Blues.