Overview Reviews Product Description Hard phenolic 1” ball. For all-around playing on bells and xylophone. WARNING: Cancer and Reproductive Harm Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Vic Firth Vic Firth M6 American Custom Keyboard -- Hard Phenolic 1" Ball Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments