Hole plugs (hardware-style) are made of plastic. Sheet or document protectors are typically made from polypropylene, a PVC-free plastic, and are available in several options.
Round plastic hole plugs are offered in multiple diameters. Product details include 0.5 inch, 0.75 inch, and 2.36 inch options.
They protect floors from scratches and reduce noise when moving furniture. For pipes and exposed metal tubing, they cover openings to help prevent wear and reduce the risk of corrosion.
Most sheet protectors are top-loading. Binder hole patterns vary by product: some are 3-hole punched while others have 11 pre-punched holes to fit different binder types.
Thickness varies by weight: standard-weight protectors are about 0.05 mm thick, while heavyweight options are about 0.08 mm.
Heavy-duty sheet protectors are described as thicker and built for frequent daily use, offering more durable protection. Economy options are lighter-weight and focused on portability for transporting documents.
They are suitable for most round metal pipes, including chair and bar-stool legs, fences, mechanical tubing, and metal bumper pipes, making them appropriate for a range of furniture and tubular metal applications.