Rule 1.10
The bat must be a softball bat which meets Little League specifications and standards as noted in this rule. It shall be a smooth, rounded stick and made of wood or a material tested and proved acceptable to Little League standards. The bat shall be no more than 33 inches (34 inches for Junior/Senior League) in length, not more than two and one-quarter (2-1/4) inches in diameter, and if wood, not less than fifteen-sixteenth (15/16) inches in diameter (7/8 inch for bats less than 30 inches) at its smallest part. Non-wood bats shall be printed with a BPF (bat performance factor) of 1.20. Bats may be taped or fitted with a sleeve for a distance not exceeding 16 inches from the small end. Colored bats are acceptable. A non-wood bat must have a grip of cork, tape, or composition material, and must extend a minimum of 10 inches from the small end. Slippery tape or similar material is prohibited. An illegal or altered bat must be removed. PENALTY – 6.06(d).
Approved Ruling: If the specification mark(s) on a bat are not legible, that bat cannot be used and shall be removed from the game.
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 Softball. Use of these substances will result in the bat being declared illegal and removed from play.
NOTE 3: Non-wood bats may develop dents from time to time. Bats that have cracks or sharp edges, or cannot pass through the approved Little League bat ring must be removed from play. The 2-1/4 inch bat ring must be used for bats in all softball divisions. Any bat that has been altered shall be removed from play.