The Adams FFMC43 Endurance Field Frame was designed to take your Adams Concert 4.3 Octave Marimba out to the field. The Adams Endurance Field frames are constructed to handle the rigors of outdoor playing. With their extra large, locking, precision wheels and oversized tube construction the FFMC43 is rock solid. With the accessory bar you have a place to attach any number of percussion instruments; bells, cymbals, drums, etc. Although the Adams Endurance field frame was designed for the outdoors it works great in the concert hall as well. Drums, cymbals and accessories sold extra.