Combat B1TB1 Tee Ball Bat Drop (Weight-to-Length Ratio): -14--"Drop" is a weight-to-length ratio of a bat. Certain drops are required or limited for use in different leagues. Bat Material: 100% Composite--For impact strength and toughness combined with flex and snap back. Bat Construction: Composite-- Barrel Diameter: 2.25 Inches Model Number: B1TB1