Ideal for everyday use when reaming holes. I use this to finish and clean holes in 3D printed parts and it's perfect. As with all reamers, the original hole size should be close to but smaller than about 0.030 inch. The result is a very, very smooth hole. Used for 3D printed FDM parts with glass fiber reinforced nylon, ABS, carbon fiber ABS. and carbon fiber nylon. No problem. Just don't run it too high as you could cause melting and use it on a drill press to match the hole axis to the part hole axis.