Frustrated with brittle fracture issues with other 1/16" carbide cutters, I came across this White Side solid carbide cutter and gave it a try. I would rate it for the same excellent durability compared to other carbide cutters I've tried. I've even carved inserts out of solid walnut with no breakage. I'm sure this high hardness cutter will eventually break as these little cutters need to be used carefully, but so far so good.