Amazon has Strathwood Set of 2 Decorative Dragonfly and Trowel Door Knockers, Cast Iron with White and Rust Finish 235371 - $6.52 + super saver eligible.
Product Features
* Set of 2 decorative door knockers in the shapes of a dragonfly and a trowel
* Made of cast iron with a powder-coated antique white and rust finish
* Designed to be rust-resistant and to withstand the elements
* Coordinating d¿cor available separately from Strathwood
* Dragonfly measures 6 inches long by 6 inches high; trowel measures 2-1/4 inches long by 6-3/4 inches high
Strathwood Set of 2 Decorative cast iron Dragonfly and Trowel Door Knockers $6.52 eFS 
