SSK Hardball Bat SKYBEAT31K SBB1002 Equipped with the "Curling Head" that incorporates SSK's technology. The Skybeat 31 vertical polishing model is equipped with a vibration-dampening grip. As many of you know, vertical polishing is a process where the bat surface is vertically roughened. The feature of the polishing process is that it increases the friction coefficient of the bat surface, allowing for more spin to be applied to the ball. ● Curling Head ● WF Shape ● SB Polishing ● Grip Tape: SBA1000 (90) Hardball Baseball Metal Bat ● Material Super Duralumin (X220) ● Size Middle Balance, [Hitting Area] 67mm [Length] 83cm [Weight] 900g or more ● Color (9590) Silver x Black ● Specifications 22SS ● Country of Origin Made in Japan