The Eddy is the perfect belaying device for sport and indoor climbing by experts and novices alike. The revolutionary Eddy is simple and safe to use. Key features include: Use of 9mm to 11mm ropes, logical threading of the rope, and a built-in emergency breaking system that eliminates the "panic pull" which leads to serious injury. The Eddy's breaking cam is completely internal, eliminating dangers of your belayer accidentally holding the cam in the open position. These features and its simplicity convinced Climbing Magazine to name it Editors Choice.