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 M425 features a 1 1/8" round nylon core and are a great option for situations requiring both warmth and clarity on the instrument with a bit more projection than the M424.1 1/8" Round Nylon Core mounted on a Rattan HandleClassic round shape for a fuller sound and natural feelWarmth, clarity, and projection on both xylophone and glockenspiel14.250" Overall LengthCompare to former model, Vic Firth Orchestral M140