Features: Thicker paper, filter well, and saving material. Very useful and practical filter funnel for 3D printer. Easily used for pouring uncured resin back into bottle, save your money. This filter funnel features a nylon mesh for consistent filtering, ensuring moisture resistance. Whether you are in educational setting or home workshop, this resin filter funnel is suitable for maintaining a clean and efficient 3D printing environment. Specifications: Component:Paper Size:Approx.11x19mm or 4.33x7.48inch Package Includes: 30Pcs Paper Filter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item. Note: 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.