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What are the inside & outside diameters of your leaky pipes?
    LeakyPipe® size.      Nominally they are O.D. 13.5mm and I.D. 9.6mm (They fit the size12 barbed fittings seen on our website, which is one size smaller than 16, which makes a tight fit in garden hose and is often the size that fits many other porous hoses).