A mount that attaches to Ball Arm Mark II Extensions to add a 1-inch ball position mid-arm for lightweight accessories. A three-pronged wing nut lets the mount be positioned and locked at different points along the arm. The 1-inch ball uses a groove and o-ring to reduce slippage and allows finger-tightening underwater. Components are hard-coat type III anodized for durability and scratch resistance. Weight is about 1.9 oz; a Ball Arm Mark II Extension is required and sold separately.
