This is the thickes guitar pick I've ever had in my hands. As all of Stubby Triangle family members, it is concave, which makes it easier too keep and harder to lose while playing. I mostly use it to play hard rock or metal, but with proper feeling it can be used to play e.g. blues as well. Using it, I can hit the strings strong enough to make them play a little out of tune for a moment! Despite its thickness, this pick can fit in a Dunlop JD5005 pickholder. Actually, the pickholder can store only two picks that are so thick, but I think that's enough, because I've never let it go while playing.