I picked up the MR.GREEN Stainless Steel Nail File with Anti-Slip Handle and Leather Case, Double Sided and Files Nails Easily for Men and Woman for $9.99 recently, and I wanted to share what I actually think about it. As someone who spent years in the Marines and now runs my own business here in Houston, I don’t have time for tools that don’t work or fall apart after a few uses. I need equipment that does its job without drama, and this nail file delivers exactly that.