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 M420 features an extra small 3/4" round acetyl core that was designed to provide a more delicate sound without sacrificing clarity on bells and xylophone.3/4" Round Acetyl Core mounted on a Rattan HandleSmall round core shape for delicate, articulate playingGreat for glockenspiel parts like La Mer13.5" Overall LengthCompare to former model, Vic Firth Orchestral M134