B grades has some vibe that doesn´t affect playability.
The Masamune is machined from a revolutionary new alloy called Alumigo Hard and designed it to really take advantage this new material.
Even stronger and more durable than 7075 aluminum, but with a similar density, Alumigo Hard makes up the body of the Masamune, with stainless steel inner weight rings.
Masamune is a wonderful combination of lightweight power and amazing sleep times.
Body: Alumigo Hard
Rings: Stainless steel
Bearing: YYR DS sice C