TDS - PVC Coated Hex Dumbell - 15 lb ( sold as pair). PVC COATED HEX DUMBELL: New York Barbell PVC coated Hex Dumbbells are perfect for group or individual workouts of power walking, aerobics, fitness classes, step training, yoga, physical therapy and more!! The cast iron dumbbell is protected by PVC (plastic) coating and provides a comfortable ergonomic grip. Saves on damage to floors and dumbbells with dropping. EZ read weights ensure the proper selection of resistance.