13 mm top hat grommet

The 13mm Standard and double Barbed Fittings will fit perfectly onto any 13mm internal diameter pipework. Barbed solid plastic connections ensure a strong and secure grip on your pipework. No tools are required as they just push into your 13mm pipework, these are typically used in in drip systems, homemade hydroponic irrigation systems and can also be used outside to water hanging baskets, pots and raised beds.