Custom Leg Hub

I created this part to reinforce the centre of the leg at the shoulder area, and to create a recess for attaching the Leg Hub.
For lack of a better description it is essentially a hub for the Leg Hub. There is an M8 threaded hole in the centre for fixing the Shoulder Hub. There is also 4x holes to match the shoulder bolt spacing that passes into the Shoulder Collar.
Pictured to the rear is the custom hub. In the middle is the common leg hub, and front is the conical ring that I machined to cut the wedge segments for the leg hub per club blueprints.