Material Quality: Lightweight Alloy & Rubber, High-quality rubber and aluminum alloy, made of high-quality rubber and metal, corrosion-resistant, oil-resistant, durable, wear-resistant, not easy to tear, and long service life. Excellent Design: Thickened design with double-sealed fasteners for better sealing. A large glossy shape ensures strong suction power and speeds up oil pumping. Ingested with low-permeability material to prevent fuel evaporation, maintain flexibility, and avoid collapse in hot and cold weather. The connector is designed to facilitate the installation of the housing tube and will not fall off. Wide Application: Suitable for helicopters, ships, motorcycles and other fuel systems, suitable for carburetors and low-pressure fuel systems Metal valves Size: 8 mm (5/16') Body size: 154 x 46 mm / 6.06 x 1.81 in Package includes: 1 black rubber fuel pump (8mm)