Hexnub Wideboyz Tires for Sphero Ollie &ndash; Accessory for Your App-Controlled Toy Robot - Compatible with Darkside Edition - Black Extra-wide Ollie tires offer awesome grip and extreme style to your app-controlled toy. Hexnub's Ollie accessories are fully compatible with all Sphero Ollie remote controlled robots, including Ollie Darkside edition! Made from a high-quality materiel, extremely durable. Compatible with all existing Sphero Ollie hubs accessory. Give your Ollie some attitude, add Maximum grip and enhanced cornering! Choose from 5 colors - Black, Purple, Green Orange and Yellow