1.Compatible with 45SP-400 neck finish for secure closures. 2.Made from sturdy PP material, resistant to cracking and deformation. 3.Ergonomic round design for easy application and removal. 4.Available in diverse color options, including white, blue, red, violet, orange, yellow, and green for product segmentation. 5.Suitable for food, pharmaceutical, and industrial packaging. 6.Spill-proof and airtight for liquid and dry goods storage.