MAPLE
Maple bats are extremely hard and dense and therefore aid the ball in jumping off the bat faster than any other type of wood.
The surface itself is approximately 20% harder and has a closer grain than ash. The hardness of maple makes it the least flexible.

ASH
Ash is much more flexible than maple and has a "trampoline" effect when it is struck by the ball. Instead of jumping off of the bat like maple, ash bats have a
spring-board effect and absorb contact with the ball. Ash bats usually have a larger "sweet spot" which gives them a bigger area to make solid contact.

BIRCH
Birch is a tougher wood than ash and is also much more flexible than maple. Birch is also a much lighter wood than both ash and maple,
which allows hitters faster bat speed.