What grommets should I buy? The most common grommets are made from aluminum, solid brass, brass coated steel and stainless steel. Here are comparison of these materials.
5 Floor Access Grommet - Power Tracks and Floor Grommets - Mockett
Gardner Bender 3/8 in. Grommet 5-Pack (Case of 10) GHG-1538 - The Home Depot
Gardner Bender 3/4 in. Grommet (3-Pack) GHG-1575 - The Home Depot
Stainless Steel Grommets - The Complete Beginner's Buying Guide
Mockett ZG3-90, Round Plastic Grommet & Cap, ZG Series, Bore Hole: 4in Dia., Black, 5-Pack
Clamp Mount Grommet – CTA Digital Custom Technology Mounting Solutions
Grommet Setter with Anvil 5mm (3/16)
5 Floor Access Grommet | Doug Mockett FG3A-90
Size : 19/32 / 15 mm Inside Diameter, 13/16 / 20 mm Drill Hole, 1-9/64 / 29 mm Outside Diameter, 1/8 / 3 mm Groove Width, 9/32 / 7 mm Total
Flyshop Black 20 mm 13/16 Hole Grommet, 15 mm 19/32 ID, One-Sided Round Thicker Synthetic Rubber Grommets Wire Protection Firewall Hole Plug, 4 PCS
Stainless Steel Grommets - The Complete Beginner's Buying Guide
Spur Grommet Thickness Recommendations