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 heaviest of the 5 models of Lexan glockenspiel mallets, the M434 is great when you need a full, round sound from the glockenspiel without that front end contact sound.1 1/8" Round Lexan Core with internal brass weight mounted on a Rattan HandleClassic round shape for a fuller sound and natural feelHeaviest lexan model without front end contact sound14.250" Overall LengthCompare to former model, Vic Firth Orchestral M139