The Bullseye Bat made by The Ceramic Shop makes throwing even easier. Concentric rings are lightly etched into the surface aiding in the centering process. The bat comes with 10" holes on center allowing you to use it on all your favorite wheel brands. Available in 10", 12", and 14". The bullseye rings will also make trimming a snap, giving you a clear guide where to center your form.
 
One side has concentric rings, the other side is flat.

Thickness: 0.25" (1/4 inch)