The single A model has a diameter of 15mm. All the A Series have the same length of 416mm making the A Series the longest in the ‘Stick with the Groove’ groove grip design. It’s taper from tip to the fulcrum makes it our longest tapered drumstick as well. Add the unique reverse taper from the grip are to the butt and this creates a very unique ergonomic profile that performs as good and it looks.