Fine elevation adjustments are made from a large-diameter rotating wheel that glides on a set of ball bearings. Coarse elevation adjustments are made with a locking collar. Windage-adjustable cradle lets shooters make fast smooth horizontal adjustments to handle wind shifts - especially appropriate for shooters using wind flags. Cradle features a sturdy bag tensioning system for excellent forend support. Includes a free three-lobe synthetic bag for flat-bottomed forends. Cradle has specially designed slots that allow users to install or interchange any of Caldwell's Deluxe front Rest Bags. Cast-iron base. Weighs 15.5 pounds.Specifications and Features: Rock BR front shooting rest Cast-iron base Rotating wheel fine elevation adjustment Locking collars coarse elevation adjustment Windage-adjustable cradle Bag tensioning system 3-lobe synthetic bag