Designed for small 9/16″ spools such as Pearsall’s , that hold silk thread and marabou floss, and metal sewing machine spools that are 3/8″ wide. Tube is ceramic, and the gripping part of the bobbin is slightly tapered Cocobolo wood for comfortable holding. The feet are gold plated balls. Overall length is 3 5/8″. Ceramic tube extends 5/8″ above the top of gripping portion. Item# 5374