Description: 100% Brand new and high quality. Cap contains a high grade O-ring seal. Heavy duty marine stainless steel construction. High polished face for sleek appearance to match today's modern watercraft. Complete with stainless steel retaining chain, to avoid losing or misplacing cap. Specification: Material: Stainless Steel Size: As the picture show Package Includes: 1 Piece Gas Deck Filler Cap Note: Please allow slightly difference 1-3mm due to manual measurement. Thanks for your understanding