Refined and simplified title: ILCA 91109 Single Block 40mm - Sailboat Hardware

The 40 mm plastic block with a black sheave serves as the return block on the mainsheet of a laser sailboat. It features no ball bearings, and the maximum line size it can accommodate is 10 mm or 3/8 inches. The working load capacity of this block is 190 lbs.

This single-sheave block has a diameter of 40 mm and is designed to handle a working load of 250 lbs, with a breaking load of up to 1000 lbs. The maximum rope line size it can accommodate is 3/8 inches.

The laser sailboat part is a durable and reliable component, suitable for various sailing applications. Its simple yet efficient design ensures smooth operation and reliable performance, making it a popular choice among sailors.

The black sheave provides a visually appealing contrast to the overall design, while the plastic construction ensures lightweight and corrosion-resistance. This combination of features makes the 40 mm plastic block an excellent choice for the return block on the mainsheet of a laser sailboat.

Overall, this laser sailboat part is a well-engineered and versatile component that can withstand the demands of sailing, providing a secure and efficient way to manage the mainsheet on a laser sailboat.

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