These nFEP release films from Uniformation are an original replacement part for your Uniformation GKtwo 10.3 inch resin 3D printer. The films are 275 x 190 mm and are only 0.13 mm thick. These FEP release films are high quality, heat resistant and durable, making them perfect for long term use. Install a new FEP film when you notice that your 3D printer produces lower quality prints or when you see that your current FEP film is damaged. The package contains 3 pieces.