Designed in tandem with some of the world's top barebow shooters, the Barebow Recurve Weight System provides an adjustable and robust weight stabilization system for barebow competition. Configurable to 20, 30 or 40oz weight settings using supplied weight rings with base module Base module contains microsphere damping agent, reducing vibration by ~13% Position adjustable around mounting slow to fine tune balance. Comes in a zippered case with laser cut foam Complies to all current barebow rules