Rule 1.10

The bat must be a baseball bat which meets the USA Baseball Bat standard (USABat) as adopted by Little League. It shall be a smooth, rounded stick, and made of wood or of material and color tested and proved acceptable to the USA Baseball Bat standard (USABat).
NOTE 1: The traditional batting donut is not permissible.
NOTE 2: The use of pine tar or any other similar adhesive substance is prohibited at all levels of Little League Baseball. Use of these substances will result in the bat being declared illegal and removed from play.

Use of any other baseball bat will result in the player being ruled out.