These are precut to fit the Profile RDA mesh setup. They are apparently thicker than just buying a mesh coil and cutting to length, which would be a lot cheaper. Other than the huge markup, these things make installation super easy and they work extremely well. So maybe worth the extra cost I don't know how long they last yet. If they last a month each then it's a no brainier. Note where they clamp down they are stronger solid metal not mesh so likely fit best.