"The original Dutch Biner! When the Whoopie Sling was introduced and Amsteel rope became popular for suspension systems, I designed this biner for exactly the purpose of hammock suspension. This biner has a 1,000 pound breaking strength and weighs only 10 grams. These mighty biners are time tested and will make your set up a snap. They have a robust wire gate that will keep you hanging securely.
Sold in pairs. Made in the USA."
The above wording is straight from Dutch, and his team.