blah results i did not see feel any difference [SEP] i have been professionally trained to file nails i have a license and degree in cosmetology but i do not practice professionally nail filing is a skill anyone with a file can master i bought this because i saw it was recommended for use with jamberries i have some but i was interested in using it with my super thin sensationail nail shields it is a thin flimsy sticker you can put on before applying gel polish which makes the removal much easier i would compare it to a super thin jamberriesunfortunately it did not help as expected i am painting my nails right now and was using the stock mini disposable file that came with the shieldsi found this file feels a little dull i cannot see any difference in using this or any regular filethe nail stickers still have a raggedy edge and it did not feel any smoother than when i use other filesi am not interested in trying another brand style at this time due to the blah results it is not a must have for the arsenali am giving it an extra star because it is constructed nicely and i have not broke it which says a lot about its durabilityi cannot handle rough nail edges it makes me cringe i am using it while i write this review and it is just confirming i do not need this