DURABLE DRIP PANS: Trays are made of durable, heavy-duty aluminum foil to collect grease and drippings. HASSLE-FREE CLEANUP: Once the grease has cooled, toss the disposable trays for an easy cleanup. EASY TO USE: Simply line the grease tray with a liner before you start cooking. COMPATIBILITY: Built to exclusively fit PG300 series. WHAT’S INCLUDED: Set of 10 Ninja FlexFlame Upgrades Grease Tray Liners.