Replaces model # VF-M134. The Vic Firth Articulate Series Keyboard Mallets are a comprehensive collection of sounds across Xylophone and Bells/Glockenspiel. With over 40 options spanning various materials, sizes, and weights, the Vic Firth Articulate Series is your one-stop-shop for finding the perfect sound, no matter the venue or repertoire. The M427 features a 1 1/4" Urethane core for a bold, dark sound with less front end attack compared to the M426.