Specification Brand : uxcell BulletPoint1 : Rubber Grommets - You will get 4Pcs Top Hat Grommets, Inner Dia.: 16mm/0.63-inch, Drill Hole: 26mm/1.02-inch, Upper Dia.: 33mm/1.3-inch, Height: 10mm/0.39-inch, Upper Thickness: 3.5mm/0.14inch. BulletPoint2 : Material: Made of rubber, high elasticity, strong toughness, flame retardant, high and low-temperature resistance, waterproof, corrosion resistance, not easy to deform and break, protect your wires and tube for a long time. BulletPoint3 : Sealing Protection: The top hat grommet is flexible, making it easy to snap the rubber grommet directly into the drill hole. Protect wires and cables from scratches and abrasion. It has straight-side walls to form sealing protection for hydroponic drip irrigation systems, etc. BulletPoint4 : Application: The rubber grommet is suitable for vinyl tubing in hydroponic drip irrigation systems, tube barrel systems, outdoor landscaping home gardens commercially installed irrigation systems, wire protection, and sealing of various pipes such as firewalls, office desks, and water pipe connections. BulletPoint5 : Note: Please measure the hole and wire sizes before purchasing. The inner diameter is equal to the size of the wire/pipe that can be connected. ItemName : uxcell 4Pcs 5/8" ID, 1" Drill Hole Rubber Grommets, Top Hat Grommets Firewall Hole Plug Fit 16mm Wire for Vinyl Tubing in Hydroponic Irrigation Systems, Black ItemPackageDimensions_Height : 9.1 centimeters ItemPackageDimensions_Length : 1.7 centimeters ItemPackageDimensions_Width : 6 centimeters ItemPackageQuantity : 4 ItemTypeKeyword : grommet-kits Manufacturer : uxcell Material : Rubber ModelNumber : 586224_1_Mt4ZSXFY1 NumberOfItems : 6 PartNumber : a24051700ux0338 ProductDescription : Description: Material: Made of rubber, high elasticity, strong toughness, flame retardant, high and low-temperature resistance, waterproof, corrosion resistance, not easy to deform and break, protect your wires and tube for a long time. Sealing Protection: The top hat grommet is flexible, making it easy to snap the rubber grommet directly into the drill hole. Protect wires and cables from scratches and abrasion. It has straight-side walls to form sealing protection for hydroponic drip irrigation systems, etc. Application: The rubber grommet is suitable for vinyl tubing in hydroponic drip irrigation systems, tube barrel systems, outdoor landscaping home gardens commercially installed irrigation systems, wire protection, and sealing of various pipes such as firewalls, office desks, and water pipe connections. Note: Please measure the hole and wire sizes before purchasing. The inner diameter is equal to the size of the wire/pipe that can be connected.