Enhance your duct integrity testing with these test darts from Hexatronic North America, specifically designed for 3.5mm ducts. Supplied in a convenient pack of 120, these test darts enable technicians to efficiently verify the condition and integrity of ducts, ensuring reliable performance and reducing the chances of failure in cable installations. Ideal for use with cable placing equipment, they are an essential accessory for professionals looking to maintain high standards in duct testing and installation safety.