I use 1/8" bits a lot so bought them when I saw this set. I tend to be a bit clumsy with a drill and I've never broken one. Rivet drilling causes excessive bit wear, but they seem to handle abuse very well. I only use these drills for metal and expect the drill to get the job done quickly and cleanly. These Beats do just that. I also checked the diameter to make sure they were made to the 1/8 inch standard and not to the millimeter precision of most Chinese knockoffs. Good product good price good work!