These potters wheel risers are designed to assist tall potters who throw sitting down. The brent® Booties are packaged in sets of three and are designed to fit the brent® EX, CXC, C, and B potters wheels (also fits ie and ie-x models made after January, 2009). brent® Booties are reversible, allowing you to raise your wheel 2 or 4 inches depending on your need.