APEX GEAR Bone Collector Attitude Stabilizer Carbon Innovative technical wave design enhances vibration dampening ability. soft-feel technical coating. Dampening echo chamber helps to eliminate and dissipate bow vibration and noise. Engineered for performance hunting bows. Molded rubber technology. TRUTOUCH soft-feel technical coating. Fits all bows. Length is 4.8 inches. Weighs ONLY 4 ounces.