The five-in-one product is developed and produced by our company, with a patent certificate. They are divided into straight-cut and cross-cut bits. The straight-cut ones are sharper and have a larger cutting capacity, which can quickly finish the gel removal. Moreover, it can be used in both directions for left and right hands, so they can also be used by left-handers; the cross-cut is relatively stable during operation, so they’re more suitable for beginners, and they can also achieve two-way rotation. The R-cut design of the 5 in 1 bits will not damage the eponychium while removing the residual gel around the nails. It can also polish the calluses on both sides of the nails, shape the nails, and reduce the gaps between the nail flakes and the natural nail. It’s a multi-purpose bit.