The MB-4G is an 18" - 25" vertical base motorboat stand. All Brownell products are made in the USA using top quality American Steel. This solid steel motorboat stand features an ACME threaded center rod with a 20-degree swivel top. This allows for a smooth adjustment, even under a heavy load. The Brownell Motorboat Stand is made of a unique design that allows it to be stacked for convenient storage when not in use. This particular model features Brownell'shot dip galvanized finish for long-lasting durability.