Good quality black metal bushing. But as some other reviewers have pointed out, the hole is a little less than 2-1/2 inches. This seems to be the problem that plagues these types of products as I assume they are all made in metric/mm and not inches. To avoid a loose fit I chose a 2-3/8" hole saw which is too small but I slowly widened the hole with a file until tight. If available then 2-7/16". A hole saw is perfect for this product.
π§ Efficient Handheld Grommet Punching Machine by BIZOEPRO
10 Review
π§ General Tools 1261 4-2 Inch Grommet: Enhanced SEO-friendly Product Title
9 Review
Smartphone Apple iPhone X 256 GB, 1 SIM, space gray
66 Review
π§ General Tools 1261 2 Rustproof Grommet: A Durable Solution for Rust-Free Fastening
9 Review
π Marinco 6365CRN Locking Plug 250V: Secure and Reliable Power Connection Solution
9 Review
π Enhance your Woodworking Projects with KREG P PIN Solid Wood Pocket Hole Plugs
8 Review
WIDGETCO White Hole Plugs
9 Review
High-Quality White Plastic Flush Type Plugs for Industrial Hardware Applications
9 Review