If you do a search for "Havalon" you'll find a short review I did a couple weeks ago. I bought the Bolt and gave my Edge to my dad. The Bolt and Torch should work with the same variety of blades. My Bolt and Edge both worked with 60A, 60XT, and 22 blades. If you want to use the thicker blades (60A), you might want to just buy some and try it on your Piranta (Edge?). They go on a little hard, but they fit on my Edge. If you don't mind a shorter blade (1.5" I think), try the #22 stainless steel blades. I like them and they are pretty cheap. The Bolt, one Torch, and a couple other knives are on sale this weekend on Havalon's website. S&H charges are little high. Use the $5 coupon on their site.