I love the new 3/8" size!! Sometimes the 1/2" is just a little bigger than I like on cards, etc. The 1/8" is a really small curve but it will serve a purpose, too.
Unlike another review, my Crop A Dile was marked correctly. The markings are painted on the "flaps" now vs. being etched in the metal so the pain may wear off, but right now the paint is much easier to see than the etching.
I use both the original and this new Crop A Dile all the time as "go to" tools.
I have had the larger (1/4"-1/2") Corner Chomper for a while, but felt I needed just a bit more versatility. This punch gives that, by filling in the "gaps." I can use the 1/8" side if I just want a little rounding, or the 3/8" side for something in the middle of the other Corner Chomper. I find it especially useful for card making. As I would expect from WRMK, it is a very high-quality product, and one I would recommend.
It's so nice to have the smaller rounder size for those projects where a 1/4 inch round corner is just a tad too big, and a more subtle roundness is desired but not very easy to do with even the smallest, most precision scissors. These are perfect, and I have been wishing something like this would crop up for years now, and finally they have. Yay!! This is one happy camper. Serious crafters must get one of these.