1/4" (6.3 mm) external hexagon to 1/4" (6.3 mm) external square with ball interlock, length: 65 mm
1/4" (6.3 mm) external hexagon to 3/8" (10 mm) external square with ball interlock, length: 65 mm
1/4" (6.3 mm) external hexagon to 1/2" (12.5 mm) external square with ball interlock, length: 72 mm