Xiem Tools USA Batmate is the perfect solution for annoying bat jitter, warping and worn out holes. Place wet Batmate below your problem bats on the wheel and instantly your warped bats become stable. It is also great for trimming bowls and plates. Simply soak the batmate in water and wring it out, then place on a dry wheel head. Place the bat on top, and then rinse off clay build up when your done. This Batmate is 14 Inches in diameter.