The Welzh Werkzeug DPF Diesel Particulate Filter NOX Sensor Tap Repair Kit is a high-quality thread repair tool designed specifically for repairing M20 and M22 threads. Manufactured by Welzh Werkzeug, this kit includes all the necessary components to effectively repair damaged threads, ensuring a proper fit and reliable performance. With its durable construction and precision design, this repair kit is an essential addition to any garage or workshop equipped for vehicle maintenance and repair.