I'm currently recommending all these system tiles to my climbing friends for training because of their versatility. They have great texture and they are made of high quality plastic, very hard material. I have this set on my home system board that's adjustable. The wall can be adjusted to 45° or 60°, which means these holds can be set up to feel like V0 to V outside my skill level. I only climb up to V4 and I use these to mimic the stuff I'm stuck on with outdoor projects. They can be side pulls, pinches, crimps, feet, you name it. Very good set for my wall. Thank you Atomik, love these!