The Supco BC1 Bullet Restrictor Capillary Tubing is a high-quality HVAC and refrigeration product produced by SUPCO in the United States. This 10-foot capillary tubing has an outer diameter of .081 inches and an inner diameter of .031 inches, designed specifically for HVAC and refrigeration systems. With a single unit available, this product is ideal for businesses and industrial applications requiring precise and reliable refrigerant line management.