The rolled rim provides strength and a convenient area to lift or pull. Reinforced base will take rough commercial use and they nest for easy storage. Compatible with the Tip Top, Swing Top or Drop Shot lids. Drop shot lids have two door, center drop design with counter-weighted flippers open easily and close automatically. Large opening will accommodate up to a sixteen inch pizza box, perfect for high volume areas. The Swing Top lids opening makes refuse disposal easy. Peaked design is counter-weighted and automatically closes to hide trash. Sloped surfaces discourage cigarettes and burn discoloration. Tip top lids have gravity, hands-free opening which encourages use and automatically closes to hide trash. No metal parts to rust or break.