The Marcy(R) 40lb. Cast Iron Dumbbell Set is manufactured with a process using recycled materials that are safer and cleaner than your traditional cast iron weight plates. With non-rust weight plates and molded plastic grips that are contoured to comfortably fit in your hands you'll lose nothing in durability and functionality with this cast iron dumbbell set. Product Features Adjustable dumbbell set (20 lbs. each) Chrome plated spin lock collars Chrome plated, knurled hand grips Four (4) 5lb plates Four (4) 3lb plates Two (2) 14" dumbbell handles Four (4) spin lock collarslastic waistband ensures a comfortable fit Additional Details Two year warranty on parts