High-quality material: Lightweight alloy and rubber construction, featuring high-quality rubber and aluminum alloy, corrosion-resistant metal, oil-resistant, durable, wear-resistant, tear-resistant, and long-lasting. Excellent design: Reinforced design with double-sealing fasteners for improved sealing performance. Optimized shape ensures high suction power and faster oil pumping. Includes low-permeation material to prevent fuel evaporation, maintain flexibility, and avoid collapse in both hot and cold conditions. Connector is designed for easy installation of the jacket tube and will not come loose. Wide application: Suitable for helicopters, boats, motorcycles, and other fuel delivery systems, compatible with carburetor 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 x black rubber fuel pump for gasoline and diesel (8mm)