The Turbo Scratcher Accessories Clipstrip contains 12 pieces, 8 Turbo Ball (2) packs and 4 Turbo Grooming Arches. The Turbo Balls feature an LED light to get your cat's attention. The fillable balls can be used with the bells for added amusement. These replacement balls can be used alone or with the Turbo Scratcher, Mega Turbo or Star Chaser. The Turbo Grooming Arch attaches to the Turbo Scratcher or Star Chaser and allows cats to groom, scratch and play all with one toy. Eliminate unwanted scratching and cat hair. "Coastal reserves the right to ship kits incomplete with no substitutions."