Designed for compatibility with the Tornado Cable Blowing Machine, this upper and lower drive belt set features a 12 mm outer diameter and comes in a pack of two. These belts are essential components for the Tornado Conversion applicable to both the 4 x 12.7 mm and 4 x 12 mm micro duct kits, ensuring smooth and efficient operation during cable placement tasks. As outlined in GMP's Tornado Tube Blowing documentation, these drive belts are pivotal for professionals seeking reliable accessories to enhance their cable laying efficiency. Whether you're upgrading equipment or engaged in routine maintenance, this belt set plays a crucial role in maintaining the smooth functionality of your cable blowing system.