Panasonic DS0015 is a set screw for metal conduits. How about practicing for the practical exams for Class 2 and Class 1 Electrician licenses? This part is only used in 1 out of 13 publicly announced problems for the Class 2 Electrician license. If you get a feel for it, you won't be confused on the actual exam. You can cut the threads with a HOZAN pass-through multi-tool. It can be used with "threadless box connector Panasonic DS02192" etc., which are included in the HOZAN skill test set. How about it for those who are going to take the exam, or for practice? Of course, since it is for general electrical work, it can also be used for ordinary electrical work. Brand new, unused. Shipping costs will be covered by us.