NSI Assorted Endurance & Dura Files & Buffers Suitable for all stages of enhancement, the Endurance & DURA Files last 4 times longer than other nail files and are excellent for all nail services from natural nails, gels, wraps, acrylics and pedicures. The straight edge is suitable for sidewall and extension edge refinement, while the other half moon contoured edge is perfect for getting in close to the cuticle, minimising the risk of touching the soft tissue. The files can be completely disinfected in 10 minutes with total submersion in, or sprayed with, an EPA hospital grade disinfectant. Available: 100/100 grit 150/150 grit 180/180 grit Buffer -180/240 grit Combo Buffer- 240/240 grit Used to refine and smooth the surface of the nail. Its shape ensures precision filing and buffing.