Coaster Round Botanic Flowering Gum Set of 6 - ButtonworksButtonworks' sets of 6 coasters are packed in a recycled card gift box measuring 9. 5 cm x 9. 5 cm. They use a variety of Australian timbers in our range and all are sealed to resist staining. Each coaster set is made from sustainably sourced Australian timber. Every tree is different, therefore the colour and grain of timber varies, making each of their products unique. The real work has been done by the tree, and they have added the craftwork.