Review on Coated Drilling Copper Aluminum Plastic Cutting Tools in Industrial Drill Bits by Fred Vazquez

Nice extra sized spare bits in my tool box that I keep in my tool box with my portable drill. I like to keep a few refills in small easy to break sizes and I didn't have that size. So when my 5/32" bit broke I did a search and found these bits. So far they work well. I only use this bit set for drilling wood and plastic. I have expensive metal drill bits that work great , so I'll probably never use those cheap metal drill bits. They're good at drilling metal. But that's not one of my problems.