Buffer blocks are used for manicures and pedicures for the surface preparation usually for gel polish. The pink blocks (150/150) are softer grit than the purple mini blocks (120/120) and the orange blocks (100/180). These mini blocks are affordable to dispose one per client. The white blocks are coarser and can be cut into 3 with stainless steel scissors or a knife that is sterile. The white block are also disposable. The tri-sided blocks are used to create natural shine on a nail plate in a manicure without polish. The tri-sided stick buffers are the same. Dark side to smooth nail surface, white to begin polish and grey to finish buff to a shine. Spongie files are used similar to block buffers and can also be cut in half. All these products are disposable.