Irwin 91160 Silver Deming Reduced Review

This industrial drill bit is a complete disappointment. Based on my observations it doesnt meet the standards of other high-quality products in the Industrial and Scientific category. Although it has a reduced shank for easy gripping, it lacks the durability needed for heavy-duty jobs. The only upside is its affordable price, but the cons far outweigh the pros. I highly recommend investing in a more reliable drill bit..

I use it to remove a weld on the inside of a pipe it's great for that but I doubt many holes in 1 /2 thick steel can be drilled . Cut softer materials, but tough.