Quick view Out of stock Flow Pro 1" Self-Priming Siphon $24.99 $19.99 Flow Pro 1" Self-Priming Siphon Flowpro Siphon Hose is the fastest gas siphon hose on the market. It features a full one inch self-priming siphon that is nearly double the size of most competive products on the market. And the patent pending design... Add to Cart