4" Duct Ultra-Light Bird Dart

The all polyurethane Series 58320 Ultra-Light Birds are a fraction of the weight of the Series 58300 line darts, tough enough to blow through 2-inch to 6-inch conduits, but thin and flexible enough to pull back if they get stuck. The 58320-400 are perfect for longer blowing applications in 4-inch unoccupied ducts, at nearly have the weight of the 58300 series darts, they travel further faster.