My nail files I have previously always bought at Rossmann and Co and for about the same price as the twins, but one has the twin nail file much more, my last nail file is broken me on the handle. The nail file is well made and the handle makes a very strong impression, it fits comfortably in your hand and both the coarse and the fine side polishes very good!. The length of 13cm, I personally find quite sufficient and perfect because I'm not a fan of long to nail files. I am very satisfied with this product and the price is more than reasonable, as I said, in the trade you do not get this money for the quality offered here very strong buy recommendation!.