That stone i linked is 8x3in. its perfect for pretty much all broadheads especially with the angled jig. im sure the sandpaper works fine but the diamond last a loooong time and stay flat. i have a lot of knives i like keeping sharp too and its worth it to have good stones for me.. Dull knives are my biggest pet peeve. For the strop, you dont need a leather strop just the compound and a piece of cereal box cardboard works just as good.