Fun and easy to use Modelling Cutting Wheels are an essential modelling tool designed for cutting into a slab | Just like a pizza cutter, simply roll the Modelling Cutting Wheels over a prepared slab to create long clean cuts | They suit all different types of modelling mediums including Clay Dough, Playdough, Plasticine, Clay and OzClay | These durable plastic clay rotary cutters have a blunt wheel so they are safe for young hands, and are ideal for both indoor and outdoor experiences | Size: 18cm long, 6cm diameter wheel | Made from sturdy plastic | Includes two types of rotary wheel designs, straight and wavy | Wash in warm soapy water