While the product information doesn't explicitly mention the sturdiness of the case, it does note that the thread chaser set comes with a carry case for organizing and transporting the tools. This suggests the case is designed for regular use and protection of the contents.
Yes, it can repair both metric and standard threads. The 61-piece kit includes dies, taps, and thread files for restoring SAE (UNC and UNF) threads as well as metric threads.
