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. One of 6 models featuring a phenolic core, which is known for being very hard and producing the quintessential glockenspiel sound. The M444 is a 1" core with added internal brass weight. Great as a general use mallet on glockenspiel.