Check Valve for Stick Balloon Film 5 pieces per sheet This listing is for 100 sheets, 500 pieces total + spares One piece size: approximately 10cm long, 2cm wide Please purchase only if you understand how to use this product immediately upon viewing. Adhere to the colored part at the top. We cannot answer questions about how to use it. Due to being a clearance item, it is considered junk. Although it is new and unused, there may be wrinkles or peeling edges, please check the images. For safety, we will classify it as "Like New". ◯ Please check my profile. I have a dog and I am a smoker. #Balloon #Valve #CheckValve #ProfessionalUse