Listings most commonly show steel (often with a nonstick coating), aluminum, and some models that include thermoplastic rubber (TPR) components.
Some racks stack into multiple tiers to maximize counter space, and others have folding or snap-in legs so they collapse flat for compact storage.
Oven safety varies by product. Some racks are described as oven-safe with listed limits (examples include 425°F and 500°F), others are explicitly not oven-safe, and one stackable rack lists heat resistance up to 320°F.
Warranty coverage varies widely across listings, ranging from a 30-day limited warranty up to 5-year limited warranties and even lifetime limited warranties on some items.
At least one round cooling grid is described as both a cooling and serving grid — presented with a copper finish and intended for table presentation as well as cooling.