Jewelry 3D model demon ring is ready for 3D printing and CNC milling (STL file is checked). The model can be used for jewelry production (casting and machining), rendering, etc. STL, OBJ files are available, so you can import it to various 3D software. Ring size: inner diameter 18 mm; Dimensions model 26x28x39 mm The hole diameter of about 18 mm Volume Print 4.17 cm ^ 3