DescriptionThis product is a cylindrical sponge, made of high-quality materials,safe, durable, and excellent in texture. It is mainly suitable for DIYcups. The excellent productiontechnology makes it have good functionality and can help you save time,so you can have more time to paint.Features- Material: Polyurethane - Size: About 9.00X9.00X12.00cm/3.54X3.54X4.72in- tumbler sponge insert for your cup turner machine. - Suitable for steel glass tumblers, ceramic cups and glass crafts. - With the tumbler turner sponge your cup will never fall (Tumblers are not included). - This cup turner sponge fits different types of normal and skinny tumblers with diameters from 10oz to 40oz. - The tumbler sponge with center hole diameter 19mm, compatible with 3/4 inch PVC Pipe.