Never buy hollow bits !! The tips will break off inside the bolt or screw. Always buy "SOLID" metal star torx bits. If the tip of the bit has a small hole, do not buy it. The solid metal bits have no hole, and will not snap or break off. These are cheap $5 bits that they're selling for over $20.
I saw this set at local electronic store for hobbies and professional use, I think it may be good and give it a try. The only thing is I don't know where they made as Wiha stated on it package: Vietnam, Germany, China??