Strong and sturdy, these adjustable stands provide dependable support for boats stored on land.Keel stands compensate for uneven ground and eliminate the need for wood blocking under a boats keel when setting a boat up for work in a yard. They adjust to the exact height needed and are a lot easier than trial and error shimming. Stands are welded steel with solid steel, ACME-threaded center adjustment rod. Stackable Keel Stand saves valuable yard space.Key FeaturesQuickly adjust for uneven groundFaster and easier to deploy compared to wood blocksSafe working load of 10,000lb. capacityHot dip galvanized finishEasily adjustable ACME solid steel threaded topsCan be nested and stacked for compact storageACME-threaded center adjustment rodUser Manual