Material: Crafted from premium HSSE (-Speed Steel), these dies offer hardness and wear-resistance, long-lasting performance even under demanding conditions. Versatile Application: These round dies are for Typical purpose threading, allowing you to process, correct, or clean external threads, making them for maintenance and repair tasks. User-Friendly Operation: devised for ease of use, simply align the positioning groove of the die with the fastening screw in the die wrench for quick and efficient threading. Innovative devise: Featuring a conical locking hole, these dies provide strong locking capabilities, preventing loosening during use, which is essential for re-threading existing threads in hard materials. Suitable for stainless steel, aluminium alloy, cast iron, copper, aluminium, and ABS in maintenance, construction, and DIY projects., Manufacturer: HIFRQVVC