Thread Repair File Set Thread Repair Files Metric and Imperial Thread Repair File Set. Housed in a durable compact case, the thread chaser set keeps all components organized and protected. Easy to store in your toolbox or take on the go - always ready when you need it. Each tool undergoes multiple precise quality inspection processes, with strict controls at every stage from materials to manufacturing processes. It is burr-free, flawless, and its precision error is controlled to an extremely small range, ensuring safe and stable use. Due to processes such as anodizing, nickel plating for rust prevention, and electrophoretic coating, the tool surface is smooth, corrosion-resistant, moisture-proof, and rust-proof., Manufacturer: THUJMGH