Each side of the file has its own grit, so 80/80 means both sides are 80 and 100/180 means one side is 100 and the other 180. A lower number is a coarser surface that removes product faster; a higher number is finer and smooths. LAVIS files on this page come in 80/80, 80/100 and 100/180, in regular, halfmoon and jumbo shapes.
Coarser grits such as 80 are for shortening and shaping enhancements like acrylic and hard gel. Medium and finer grits such as 100 and 180 are for refining shape and for gentler work closer to the natural nail. Buffers come after filing, to smooth the surface. Keep a coarse and a fine file at each station so you are not forcing one file to do every job.
They are shapes of the same kind of file. A regular file is straight, a halfmoon file is curved, which many techs find easier for shaping the sidewalls and the curve of the free edge, and a jumbo file is wider for faster work on larger areas. Several sizes come singly or in packs of 50, so you can stock a shape before committing to a box.
Follow your state board rules. Many states treat porous items such as standard files and buffers as single-use, so salons give each client a new one or let the client keep it. Packs of 50 files and boxes of 500 to 1,500 buffers on this page are sized for that kind of use. Store unused files clean, dry and covered until you open them.
Besides files and buffers, the page lists station supplies DTK tags for nail tool care, including nitrile gloves, cleaning and dusting brushes, cuticle nippers and scissors, liquid and brush washing cups, dappen dishes and colour mixing palettes. Each listing shows its own size and stock, so check the product page before you add a full box to an order.