Exotic Nutrition Sandy Track (for Silent Runner 12" Reg) Safe & easy way to keep your pet's nails trimmed - Washable for easy maintenance The plastic track has a soft sand abrasive material permanently bonded to it Tracks fit into Exotic Nutrition's Silent Runner Wheel 12" Regular - **THIS IS ONLY TRACK, WHEEL SOLD SEPARATELY** Package sets available on Amazon & Exotic Nutrition website- wheel + sandy track + cage attachment FAST, FREE SHIPPING! Avg 3 days! ZooPro sells exotic animal foods and accessories that are manufactured by Exotic Nutrition Pet Supply Company. Exotic Nutrition has been the industry leader of exotic animal products since 1998, specializing in sugar gliders, hedgehogs, prairie dogs, marmosets, degus, skunks, opossums, chinchillas, rats, hamsters, gerbils, squirrels, rabbits, guinea pigs, rodents, ferrets, chickens, bluebirds, wild birds, monkeys, marsupials, reptiles, amphibians, & more