Introduction
The document discusses the critical point of transition between the mast and boom on a rig, highlighting the vulnerability of the cardan joint, also known as the gooseneck, to significant strains during sailing activities such as staying, turning, booming, and trimming of the mainsail.

Specifications
The document specifies that the goosenecks are CNC-milled from an extremely hard aluminum alloy. This construction ensures durability and the ability to withstand extreme conditions, such as a boom flying at 180 km/h due to a violent wave.

Product Details
A table is provided listing various models of goosenecks with their specifications:

• Flange width, vertical diameter, height, opening, and horizontal diameter are specified for each model.
• Models include JM No. 02 60 701, 02 60 702, 02 60 705, 02 60 706, 02 60 707, 02 60 710, and 02 60 720.

Applications
The goosenecks are designed for use with wheels and cardan joints for rodkickers, ensuring compatibility and functionality across different rigging setups.

Conclusion
The document emphasizes the importance of using high-quality, durable materials in the construction of goosenecks to ensure safety and performance in challenging sailing conditions.