The Pius Cheung Series Marimba Mallets features six models with rubber cores of varying hardness. Constructed on either rattan or birch handles, each model is wrapped with a unique (alpaca-blend) yarn that allows the player to produce a tone of gold at extreme dynamic ranges from the utmost silky pianissimo to pesante fortissimo with minimal effort. Features: Rubber cores Birch handles Alpaca-blend yarn Includes: One PIUS1B Mallet: Soft - powerful bass mallet for solo playing Two PIUS3B Mallets: Medium - general mid-range mallet for solo playing One PIUS4B Mallet: Medium Hard - high-range mallet for solo playing