Description:The wide range of applications makes it very useful and practical. And the clear mark allows you to see obviously and use it more conveniently.Durable feature makes it can be used for a long time. The transparent design makes it very easy for you to operate it.Made of plastic material, this product is very durable to use.There are two specifications for you to choose from: 20cm, 30cm.It is suitable for wood turning, arts, crafts, school projects and woodworking finishes. And it is suitable for wood, posters, plastics, metal, glass, composite materials, etc.Item Name: FinderMaterial: PlasticFeatures: Transparent, Clear Mark, Wide ApplicationSize Details: 20cm: Diameter: 20cm/7.87" (Approx.)30cm: Diameter: 30cm/11.81" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Center Finder