Extra product services (extended warranty, insurance, etc.)
Extra product services allow you add unlimited extra services to your products such as extended warranty, insurance, carrying services and something else. It is similar to products options, but the biggest difference that extra services in your cart comes as separate item. For some sellers it is important that in invoice extra services will be separated from products.
In short way: client can select service like product option, but in the cart service is like individual product.