This is a big upgrade from using ordinary emory boards. I like how it removes nail material quickly but smoothly too. Glass does not wear out so it will last a long time. It does come with a small pouch so I did’t need the extra case but it is larger and handy to keep other things. I love the file and I don’t have to say how important nails are for sound. I play finger style steel string and electric bass guitar, nails matter on both instruments. Very happy with the purchase even though it was a splurge.