Louisville Slugger YB97W TPX Warrior Youth Baseball Bat (-12.5) Drop (Weight-to-Length Ratio): -12.5--"Drop" is a weight-to-length ratio of a bat. Certain drops are required or limited for use in different leagues. Bat Material: 7050 Alloy-- Bat Grip: Synthetic Leather--Provides you with a tackier grip for a better feel. Barrel Diameter: 2.25 Inches Model Number: YB97W