Food Grade Sealing Clips: Food grade PP material is durable and reliable to use. This design seals the air and keeps the food fresh and crispy for several months (nuts / crisps / grains, etc.).. The perfect sealing effect, guarantee the freshness of food, snack, etc.Large-diameter sealing clip does not need to be removed during use, just open the lid to pour out food and snacks.. Ideal for bagged coffee, cereal, rice, popcorn, flour, sugar, flax seed, or any food that pours from a bag. Works on a plastic or paper bag.Reusable for years.. Name:Multi-function sealing clip. Weight:36g*4. Scope of application:Snack bag seal.