These crimps are a great compliment to the first set. The are edges are a little bit smaller than the previous Golfus set and make for a great progression. These holds are good trainers for contact and precision, but at 45 degree be ready for nothing easier than hard V8/V9 depending on what kind of feet you use. As the overhang lightens the holds become more manageable with intricate sequencing. I think the optimal angle of the wall is between 20 and 35 degrees for these holds, unless you are tacking them onto features.