Industrial Grommet Machine at Helene Winkleman blog Amazon.com: 200pcs Rubber Grommet Kit, Hollow Firewall Grommet, 8 Sizes 170Pcs 7 Sizes Rubber Grommet Assortment Kit, Firewall Hole Plug Set CA90 BLANKING GROMMET ASSORTMENT The Boss Shop Queensland Australia. Mr. Gasket rubber grommets are for running wires through firewall or anywhere chaffing could occur. This heavy duty grommet set includes 30 of the most popular grommets as used in automotive sheet metal applications. The grommets feature an extra thick wall section to insulate and protect wires, cables, hoses, etcetera, from the sharp sheet metal edges. Kit includes six grommets of each size to fit the following hole diameters: 1 2 inch, 5 8 Inch, 3 4 inch, 7 8 Inch and 1 inch Kit Contain 30 Pieces 6 Of Each Size The Kit Includes 1 2 5 8 Inch3 4 7 8 Inch1 In Sizes Perfect For Protecting Wiring From Chaffing Details: Color: Black Emission Code: 5 Material: Rubber Warranty: Manufacturer's Limited 90 Day Warranty