1 1/2" PVC Adapt-A-Flex Grommet AKP10050 - The Drainage Products Store
RS PRO | RS PRO Black PVC 9.5mm Cable Grommet for Maximum of 6.4mm Cable Dia. | 543-204 | RS Components
PV50A GROMMET PK 100 Multicomp Pro, Tülle, Offen, 8 mm | Farnell DE
Amazon.com: Rubber Grommets 3/4 Inch ID, Donut Rubber Grommet Ring drilled 1 1/8 Inch Hole using SCH40 1/2 inch Hydroponic PVC pipe and 25mm or 3/4 Inch Barbed Elbow Tee Straight Y
Semi Blind PVC Grommets
RS PRO Black PVC 20mm Round Cable Grommet for Maximum of 16mm Cable Dia. - RS Components Vietnam
For punched or drilled metal sheets HV1204 (633-02040)
Amazon.com: HORTIPOTS 1 Inch Rubber Grommet 25 Pack, Replacement Rubber Grommet to Drill 1.5 Inch Hole Using with SCH40 3/4 inch Hydroponic PVC Pipe in DIY Hydroponic Set Up (Pack of 25) : Industrial & Scientific