The Harken 80mm Single Element Block Mastbase w/Swivel, model 6221, is designed for superior performance and reliability on the water. This block features a robust construction with a lightweight design, making it perfect for both racing and cruising. The integrated swivel allows for smooth, unrestricted movement, reducing friction and wear on your rigging. With a maximum working load of 1,500 lbs, it’s built to handle the toughest conditions. Upgrade your sailing experience with this essential piece of equipment that combines durability and efficiency for optimal sail control.