These are known as the Silver and Deming drill bits because they are the LARGE sizes. Made by Neiko Tools USA. They penetrate 80% faster. Long-lasting working capacity and stay sharper. This set goes from 9/16" to 1". You get 8 different drill bits. The sizes are: 9/16", 17/32", 11/16", 3/4", 13/16", 7/8", 15/16", and the 1". Each drill bit has the 1/2" cut-down shank, so they can be used in any drill press with a 1/2" or larger drill chuck. These bits are made from HSS, cobalt coated high speed steel. The entire set comes in a handy pouch where each bit has its own place. They are excellent for drilling large diameter holes in steel and other hard metals.

SKU: 7668G