From Salyers Percussion:
The Salyers Percussion E30 hard yarn mallet features birch shafts, a rubber core
and high quality wool/nylon blend yarn for a full, round tone.
The Etude Series is designed to be a high quality and economical solution for
percussionists and band directors. The Etude Series is made with the same quality
materials that you will find on many higher priced alternatives. The design, craftsmanship
and material selection set this series apart from other “value” brands on the market today.