M5 knuckle joint with radial and lateral adjustments. Adjusts 360 degrees radially and 190 degrees laterally. Solid titanium with steel and stainless steel screws. An integral miniature ball bearing allows smooth radial adjustment. 11.0 mm diameter x 43.5 mm length. Weight is 16.53 grams. Includes two hex wrenches (not shown) for adjusting.