This hold makes math class fun! The angles allow you to bear down harder than a smooth dome. The 2.0 texture is perfect for this shape. Kinda like 200 grit sandpaper, but better. Have it on a 50* wall (40* off of 90*, 90* being vertical) and it’s hard! Not impossible but I definitely feel as if I’m trying to crush it. Full on open hand style. It’s hollow with plenty of material around the bolt, so that’s nice. Collecting the entire set is a must.