Most products use stainless steel as the primary material. Many combine stainless steel with glass (often tempered) or include occasional plastic components, so you’ll commonly see stainless steel bodies with glass/tempered-glass or plastic parts for lids or trim.
Serving and storage sets frequently include lids, food pans or water pans, and serving tools (spoons, tongs). Buffet/chafing sets often also include frames and fuel cans so the set is ready to use.
Many are designed to nest or stack and include anti‑jam lugs so pans and frames fit together. These features reduce required storage space and make retrieval easier.
Lids are commonly stainless steel, glass, or tempered glass. Chafing and buffet sets in particular often list stainless‑steel or tempered‑glass lids.