This high-speed steel T type wrench set is a must-have for anyone who needs to cut threads-on bolts and screws From repairing engines to building machines, this thread cutting tool set can be used in a variety of automotive and-machinery applications high-speed steel, this metric thread cutting kit is built-to last and can be used-for a wide-range of applications Whether you ' re a professional or a DIY-enthusiast, this thread cutting tool set is perfect for anyone who needs to make cuts on bolts and screws The handle bearing steel, the chuck alloy-steel Suitable for bicycle-repair, assemble furniture, machinery-manufacturing, Manufacturer: Limtula