No handle needed for these rollers! Just roll them with the palm of your hand to create textures and patterns in clay. Use on the walls of pots, on slabs, tiles, plates or anywhere you want to add visual interest. Each roller is 4.75"L x 1"Dia. (12 cm x 2.5 cm). Note: the black areas in the print example shown indicate the areas of clay that will be raised on the surface when the roller is used.