Medium-weighted rubber cores create a clear and appropriate sound. High-grade rattan shafts provide the ideal feel and sound on the vibraphone making this series the perfect choice for contemporary chamber percussion ensemble orchestral and solo literature.M240Medium. Produces a pure warm tone making this a very lyrical choice. L = 15 3/8?M241Medium hard. Themost universal choice in the series. A virtual all-purpose mallet! L = 15 3/8?M242Hard. A bold mallet that provides outstanding projection and clarity. L = 15 3/8M243Very hard. Brilliant clarity is achieved even at the softest dynamic level. L = 15 3/8Get your Vic Firth Contemporary Vibe Mallet today; with the security of our many decades of experience and Sam Ash Direct efficient order processing your satisfaction is guaranteed!