Plastic with a purpose! The Track Spare + is perfect for shooting spares but also offers power at the pins when you need a ball for dry lanes!
Including the proven i-Core weight block inside a polyester ball will allow you to have a ball that will flare highly on drier lanes and give you some backend pop when your other balls are overhooking.
It will also make shooting spares like the 3-6-9-10 much easier as you will be able to cover the 9 pin. This ball looks great and performs even better!