Use in place of conventional wood blocks.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 blocks10,000lb. capacityHot dip galvanized finishMade in the USAUse to stabilize vessels