The ProMark Mike Portnoy 420x drumstick offers more power and projection than Mike's original 420 model. Erring on the larger side of a 5A, this stick features an oval wood tip for a warm tonality on cymbals and drums that appeals to the performance needs of most drummers. ProMark's patented ActiveGrip technology provides a comfortable grip. Diameter : .565" / 14.4mm / Length: 16 1/4" / 412.8mm