These nFEP release films from UniFormation are an original replacement part for your UniFormation GKtwo 10.3inch resin 3D printer. The films are 275mm x 190mm and are only 0.13mm 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.