Designed with guitar players, collectors and studios in mind, Session-Pro Double-Stack mobile guitar rack provides high-capacity storage for guitars. Heavy-duty wheels with brakes allow you to easily move up to 18 guitars around the studio, music room or shop. They also provide an excellent organizational storage solution to help you save valuable space and reduce clutter in a compact setting while keeping your instruments safe and secure. The Session-Pro Double-Stack Guitar Rack model has uniquely designed cradles that keep your instruments ROCK-solid when the rack is on the move. Nitrocellulose-safe felt protects the guitars at all contact points. The included hex wrench and a screwdriver are all that are needed for assembly.