The Nebojsa Zivkovic series NJZ7 very hard yarn marimba mallets were developed over more than a year and the attention to detail shows in every element from the cedar handles to premium synthetic-blend yarn. The NJZ7 features a soft rubber core for sonic clarity at high volumes and supple sound in lower dynamic ranges. Cedar handles are hand selected and strength tested to ensure they stand up to nearly any need. The extent of excellence seen in Zivkovic's performance and composing careers is portrayed perfectly in this high quality mallet series.