Various sizes and styles of Brownell ACME threaded stand tops are available. The ACME thread is adjustable under load a feature not offered by most other stand manufacturers. They can be used to fabricate your own trailers or cradles or replace older stand tops. Made from solid American steel, the precision-cut Acme threaded rod is adjustable under load, allowing for secure storage. It is unthreaded at the bottom for safety and features a durable steel handle for adjusting the height. All tops have 1-7/16” O.D. rods and carry a 20,000 lb. (9,100 kgs) safe working load.