Material: It is made of rubber and aluminum alloy, resistance to crude oil, gasoline and aging, not easy to crack, durable. Easy Installation: Step seals are easy to install and hard to fall off, also can help prime the fuel system quickly. One-Way Valve Pump: Comes with a one-way valve installed to help quickly prime the fuel system. Excellent Design: Designed with low permeation material to prevent fuel evaporation, to maintain flexibility and prevent collapse in hot and cold temperatures. Widely Used: Suitable for Cars, helicopters, ships, motorcycles and other fuel systems, and perfect for carburetors and low pressure fuel systems. Size: 8MM 8mm & nbsp; hand fuel pump line aluminum rubber hand primer oil transfer bulb crude petroleum gasoline for marine outboard car boat Features: Material: It is made of rubber and aluminum alloy, resistance to crude oil, gasoline and aging, not easy to crack, durable. Easy Installation: Step seals are easy to install and hard to fall off, also can help prime the fuel system quickly. One-Way Valve Pump: Comes with a one-way valve installed to help quickly prime the fuel system. Often used as a hand pump in boats to supply fuel to the outboard motor. Excellent Design: Designed with low permeation material to prevent fuel evaporation, to maintain flexibility and prevent collapse in hot and cold temperatures. Multiple application: suitable for Cars, helicopters, ships, motorcycles and other fuel systems, and perfect for carburetors and low pressure fuel systems. Specification: Material: rubber + aluminum alloy Color: black Input connectors: 8 mm & nbsp; Opening pressure: 0.2 bar Working pressure range: 0.2-6 bar Operating temperature range: -30 - + 130 The package includes: 1 x hand fuel pump