We are committed to providing more reliable product and better customer service to our customers,if you aren't 100% satisfaction with our products,please contact our customer service team and we will be glad to assist you. Includes 2 handles and 180 (extra strength floss) refill heads. An ergonomic handle design is included to provide comfort while cleaning, easily attach/remove the floss head. Angled at an optimal 135 degrees, the floss reaches every crevice between your teeth. Comfort grip handle and non-slip surface for better control,easy access to back of teeth. The extra strength floss ,does not stretch, shred or break.