The Dame Evelyn Glennie series of keyboard mallets are designed to be used on both Marimba or Vibraphone. The series features soft, medium, and hard mallets. Promark EG1 soft keyboard mallets are cotton-cord wrapped for pronounced attack and articulation. The EG1 has a more delicate expression for an increased tonal response, which is well suited for legato chordal passages. Each mallet features an unfinished birch handle for increased comfort and a slip-resistant feel. Features: A soft, cord-wrapped mallet, best suited for the middle range of the instrument. Length: 15 5/8" Head Size: 1.35" A great articulate mallet for both vibraphone and marimba.