Boston valves are made of high-quality high-density ABS plastic, durable and corrosion-resistant.
Our products can fit into holes 21 mm / 0.83 inch at the bottom.
The diameter of the upper part of the thread is about 22 mm / 0.8 inch and the length of the threaded part is about 17 mm / 0.67 inch.
There is a rubber pad at the bottom of the air plug to prevent leakage more effectively and protect the air plug more safely.One way inflation valve, rapid inflation.
Boston valve replacement kit is suitable for most canoes, inflatable boats, rafts, rubber boats, etc.