The Tolsen 33011 is a 9-piece threading set designed for professional industrial and sanitary installations in workshops, garages, or on construction sites. It utilizes a BSPT thread type and includes six different die sizes ranging from 1/4" to 1-1/4", allowing you to handle a variety of pipe diameters. To make the work more efficient, the set features a ratchet rotation threading system and two extension bars that help you reach deeper areas. Each component is treated with a black finish, which protects the metal from corrosion and extends the overall lifespan of the tools. Everything is organized within a sturdy ABS case featuring a colored sleeve, ensuring the pieces stay secure and easy to find. The entire kit comes shrink-wrapped to keep the contents protected until they reach your workbench.