Power Hobby Raptor XL Belted Tires Viper Wheels Arrma Kraton Outcast 8S BlackLESS WEIGHT, LESS BALLOONING, LESS DISTORTION, MORE DURABLE Micro Fiber Tech (MFT) is a new innovation and technology which combines a unique woven belt and a special adhesive formula that perfectly bonds within the carcass of the tires. Therefore, its quality is retained over the entire lifetime of the product. During driving, MFT belted technology effectively reduces and limits the rate of distortion and deformation of the tire, which provides a