WON'T CORRODE CHIP CRACK OR PEEL. MADE WITH DURABLE LONG LASTING POLYETHYLENE RESIN. LEAK-PROOF SEAMLESS PLASTIC ALLOWS EASY CLEANING AND WASTE DISPOSAL. LID PROTECT CONTENTS AND HELP KEEP ODORS IN. LIDS ALLOW RECEPTACLE STACKING WHEN IN USE. NSF APPROVED. SOLD INDIVIDUALLY.