Material: Hokkaido Japanese Birch Manufacturing: Made in Japan Size: 84cm (850g average) Diameter: 64mm average Specifications: Made in Japan, Wooden Bat, BFJ Mark (Japan Baseball Federation Official Mark) / Official Game Compatible / Lightweight Bat Usage: For Hardball Baseball Bat, Adult, High School, University Baseball, Adult Baseball, Practice, Games Series: "BIG STICK ELITE" Lightweight material Japanese Birch. Lightweight bat that takes advantage of its characteristics. Available in sizes for hardball junior high school players and adults who prefer lightweight bats.