X-Factor Outdoors 8 Inch Stabilizers are constructed of A-Tech rubber. These stabilizers have opened the door into the next generation in sound and vibration dampening. They also are the only fully adjustable stabilizer on the market today. There are no steel rods or supports running through our stabilizers to transfer vibration back to your bow. This gives them the ability to dampen 360 degrees. The bow stabilizer also incorporates the patented Shock Block Technology! The stabilizer weighs only 3.4-4.2 ounces. Perfect for the avid bow hunter.X-Factor Outdoors