Wimberley RB-100 Riser Block Wimberley Head II For use with the Wimberley Head II on the original Skimmer Ground Pod Adds additional height to Wimberley Gimbal Head when used with the Skimmer II Ground Pod Adds height to a short ball head Anodized 6061 Aluminum, stainless steel fasteners Made in USA. Assembled in Charlottesville, Virginia