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 M414 features a 1 1/4" round rubber core that was designed as a larger diameter practice mallet. Great when a little more weight is needed during a practice session and wont dent wooden bars.