System Holds make up System Walls. That's fancy for a pair of climbing training holds that feel the same for the left and right hand. By training with system climbing holds, you can target crimp, sloper, pocket, pinch, compression, and any other grip you want to repeat. This type of training allows you to fatigue very specific muscles that are required for all climbing grips. System Walls are an excellent choice for commercial gyms as well as the home climbing wall.