Made of 100% aluminum and designed with an advanced grainy surface texture to mimic that of real rock. Threshold is the first fully metal Hangboard of its kind. The Threshold is a 2-piece set, making it perfect for mounting in a position that will match your specific anatomical needs. Each unit comes with adjustable features to fine-tune your finger strength training habits. We've also incorporated 2 rear channels that will allow you to mount our Hangboard onto a track system. What better way to optimize your training experience than to customize the width between your Threshold set? The track system is perfect for adjusting the width of your Threshold in an instant. Whether you're training one-arm pull-ups and need to slide your rig to the center of your doorway or training with a friend who may need a more narrow or wide stance, the track system will adjust to your needs. This product is coming to you from my partner and I, who are true climbing junkies. The reasoning behind our ledge training style is to give the user a clear path towards tendon and muscular hypertrophy, strength, and power. Not only do we understand the training evolution process, but we took it one step further. With this design, there are no confusing holds or unsure moments. The ledge system is by far the most practical and efficient way to train and gain actual results.