Features Adopts premium 316 stainless steel material, rust and corrosion resistant. The process is rigorous and each interval of the product is manufactured according to the standard. The rubber sealing ring makes the combination between the cap and the tank effective to prevent leakage. Best boat accessory capable of withstanding severe performance at sea. Has good precision, degree of polishing, brightness and flatness. Specification: Item Type: Fuel Tank Cap Material: 316 stainless steel Tip diameter: φ44mm Thread diameter: φ40mm Features: Has good precision, polishing degree, brightness and flatness. Best boat accessory able to withstand severe performance at sea.Adopts premium 316 stainless steel material, resistant to rust and corrosion.The process is rigorous and every interval of the product is made according to the standard.The rubber sealing ring makes the combination between the cap and the tank effective to prevent leakage. Package list: 1 cap. Package List 1 x Cap