• Constructed of a hollow fiberglass core with a wood veneer securely laminated around the outside
• Bar is round with an outside diameter of 1.575" (40mm).
• Pivot points of the bar are 94 1/2" (240cm) center-to-center.
• Except for the blue collar, both rails look and feel the same. The optional (soft) E Rail has more action and movement when in use. You will love the feel of the European brand bars on an AAI set of bars!
• The Graphite E Rail is made with less Graphite strands making it 15-17% less rigid than the X Rail.

Here is brief history: A few years ago, AAI approached USA Gymnastics and the Women’s Elite program to see if AAI could improve at least one product to help enhance the gymnasts’ performance during competition. Because of great communication with coaches and gymnasts, the concept to develop an uneven bar rail which gives a more flexible feel and provide the athletes an easier transition for international competition was determined. The engineering department at AAI took the suggestions and comments and developed three different sets of uneven bar rails with various flex. Each rail had collars of a different color based on their flexibility, such as blue, red or black. After an evaluation period, the coaches and gymnasts were able to select the rail that provided the best performance comparable to what a gymnast would expect when they compete on other manufacturer uneven bars. With this, the AAI Graphite E Rail with blue collars was born.