This may sound weird, but part of what I like about this is that you get 3 of each grit in a pack. For something so elementary, it's nice to have that reminder that I can swap them out a lot sooner than I would for something more expensive. Regardless, really solid basics tools.
This is absolutely a great way to make your kits look absolutely fresh. If you're going to buy it, be sure to buy multiple. It does a great job of giving your kit a new look overall.