I like the Artemis heel smoother, and these are the replacement tips. The tips don't last all that long, depending upon your own expectations. But I find this product to be the best for smoothing down the feet and toe area, including cuticles. This product is much better than the foot smoothers that use razor blades or cheese graters (ouch) and is easier to use than a pumice bar, since it is sort of a pumice bar on batteries. I stocked up on a bunch of these tips to keep well supplied for a while.