I purchased a pair of 3/4" tiles for my home spray wall. 4 holds in one. Normally it takes time to dial in the exact level of crux challenge. With t-nuts being where they are, I can't simply move a hold an inch or two further away to up the challenge. Instead, I have to make the hold a little bit worse. The 4 different edge angles allow for fine tuning. Once the problem is dialed with the most incut edge, I can rotate the tile a quarter turn. Viola! The crux just got a little harder. The texture is a little smoother than most my other Atomik holds, allowing more crux throws before the skin says stop.