Thank you for viewing. These are spare balls for a soft tennis trainer. The main unit broke and was discarded, but these spare balls are unused, so I am offering them for sale. - Brand: X-TEAM SPORTS - Product Name: Spare Balls - Model Number: 738GCH-TSS-N - Material: Rubber - Country of Manufacture: Taiwan Thank you for your consideration. *We have priced these as low as possible, taking shipping costs into account, so we are unable to offer discounts.*