These grommets can be used to replace old, worn grommets in your hydroponic systems and are essential components when making a system from scratch. Grommets are a convenient way of attaching tubing or fittings to buckets, water tanks, etc.
Unlike the other grommets we carry, the 1/4″ grommet only accepts the 1/4″ tubing itself (3/16 in ID – 1/4 in OD); no barbed fittings are necessary.
Required hole size: 7/16″ (11 mm).











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