WALNUT HOLLOW-Clay Extruder Adapter Set. This adapter set is designed to be used with the Walnut Hollow Clay Extruder (sold separately). It includes five metal discs for creating different shapes of clay--flower, heart, butterfly, square, and circle. Each disc measures 1 inch in diameter and an adapter piece is included for attaching the discs to the Extruder. This set contains one Extruder Adapter and five discs. Instructions are included on the back of the packaging. Imported.