Blackspur 40 Piece Tap and Die Set

This has to be one of the worst products i have ever owned. I bought this product unaware it was made by Blackspur. All of there products are of a bad quality and would not recommend any of them to anyone. I used it to re-thread a bolt i needed. It blunted completely the whole bolt and rounded off the re-thread tool. I tried out another re-thread bit on a random bolt, and it did exacly the same.

I would have liked to known the make of the product before I dived in and bought it. I would have avoided it.