These textured rollers are made up of biodegradable plastic. It comes with a hole down the centre so that you can put a dowel rod through it and apply even pressure when rolling. We recommend having used this without the rod and they work well. Each texture roller is approximately 9inch, making them easier to handle. We can't promise the colour of the rollers that you will get as we make different colours of rollers too. CARE OF YOUR CUTTERS: Some clean-up on the edges is required after each use, so gently wipe with isopropyl alcohol when using on clay and a gentle warm soapy water when using on fondant. Baby wipes are excellent for wiping down the cutters and we recommend not putting them into the dishwasher as the extreme heat will warp and distort your cutters Feel free to share with us your amazing designs using these cutters. We love seeing what you create on our Instagram page: Dadarkararts.