Full double French Horns from „81“ Series are F/Bb (Bb/F) models, which are instruments suitable for a solo and orchestral play. Lightweight construction is made of brass or red brass. Valves, hand-bent mouthpipe and tuning slides are made of nickel-silver. Thanks to three-dimensional adjustable finger hook the instrument may be adapted to each hand. Valves have minibal action, allowing soft and flexible control.