Andersen winches feature Andersen's famous Power Rib drum surface that generates horizontal friction and provides extra grip, reducing the number of turns required compared to other drum designs. The highly polished smooth surface of the drum ensures the long life of sheets and halyards, minimizes the risk of jamming, so the rope slides easily up the drum. Lightweight stainless drums Aluminum bronze internal construction Weighs the same or less than aluminum winches of similar size Pawls are made from unbreakable cold pressed 316 stainless steel bar Aluminum bronze base plates for double strength and increased efficiency Single speed Non-self tailing ANDRS# Gear Ratio Power Ratio Drum Base Height Weight 50006 1:1 9.8:1 2" 2 15/16" 2 11/16" 1.1 lb 50010 1:1 8.3:1 2 3/8" 3 5/8" 3 1/4" 3.1 lb