Developed in partnership with professional potter, Rich Brown, and inspired by tools and traditions of North Carolina production potters, the Speedball Boss Base allows for the ultimate ergonomic experience while delivering unmatched consistency and ease. Adding efficiency and precise results to any studio setting, the Boss Base will become your tool of choice to easily open your small cups, mugs or plates while ensuring a uniform bottom to every piece. Available in four vibrant colors (Red, Blue, Orange, Green); 3/8" size.