Check the listing for details. 5-Pack 1-1/8 Inch Drill Hole, 3/4 Inch ID Silicone Rubber Grommets [Black]. Condition: New. Listed at 11.61 USD. PRODUCT APPLICATIONSWidely used in Hydroponic systems, irrigation systems, Home gardens, landscaping, automotive, firewall wiring, spray, cylinder, valve, wire protection, and so onPRODUCT DETAILS & INCLUDE√ Material: Silicone Rubber√ Drill Hole: 29 mm/ 1.14 Inch√ Inner Diameter: 19 mm/ 0.75 Inch√ Upper Diameter: 36 mm/ 1.42 Inch√ Height: 13.5 mm/ 0.53 Inch√ Upper Thickness: 3.5 mm/ 0.14 Inch√ Fit Hole Diameter: 28 mm/ 1.1 Inch√ Package List: 5 Pcs x Silicone Rubber GrommetsPRODUCT ADVANTAGES1. Made of tough and durable silicone rubber material, which is excellent flexibility, waterproof, strong insulation, high and low temperature resistant(-40℉~ +482℉), corrosion resistant, flame resistant, and wear resistance2. Insert and seal holes to protect pipe cable wires from scratch or damage by pointed edges and corners.