Designed for mallet specialist and composer, Anders strand of the Global Percussion Network, These models are available in five models for a spectrum of sound choices. The AA15 is an extra soft mallet that sounds great on extended range vibraphones and bass marimbas. The AA20 medium soft model and the AA25 medium mallet sound great for general playing. The AA30 hard model works well in upper registers, and the AA35 is a wrapped xylophone mallet.