The Black Belt is outfitted with urethane blades molded into the foam for maximum scraping power. The tough urethane blades are great for paraffin removal. The urethane blades make it the perfect choice for plastic or internally coated pipelines, where traditional brush pigs cannot be used. The Black Belt is available in both medium and heavy density urethane foam. The Black Belt can be modified to accommodate transmitters, magnets and/or radioactive sources.