The smallest and strongest knot passing pulley on the market today! With an incredible MBS of 15,000 lbs and high strength stainless steel, our knot passing pulley puts the others to shame. It has the highest strength to weight ratio of any pulley in its class. It"s light weight makes it a popular choice for rescue teams and other conditions where size and weight are a factor. This pulley has many holes that function as additional attachment points. The 3" aluminum wheel turns on a sealed ball bearing for a smooth rope pull and long life. The unique design of the pulley sideplates enables the knot passing pulley to function as an edgeroller in a pinch. Comes with a lockoff pin to prevent the wheel from turning. Made in the U.S.A.