AMACO Plastic-Bat 9 in square bat is a versatile, virtually indestructible bat designed by studio potters. This easy to clean bat made of 1/4" thick, high-impact plastic provide continuous use without splintering, delaminating, swelling or shrinking. Bat impervious to water and most chemicals is light in weight, easy to stack, carry and store. Oblong bat with 10 in apart spaced pin holes perfectly fits most of the pottery wheel brands.