Tennis Equipment
Tennis Ball Drop Machine, Adjustable Height Non Electric, Training Accessories,for Children Beginners Teaching(Without extra track)
TENNIS SERVING MACHINE: The tennis ball drop machine is made of plastic and iron,The track which the balls are placed is made of plastic and the bracket is made of iron,It can withstand daily use, making it a reliable choice for the next few years...
https://www.bizrate.co.uk/tennisequipment/tennis-ball-drop-machine-adjustable-oid40371425397.html