Aluminium square B-drop by Kaycan. Kaycan's aluminum rain carrying system provides both a professional, complementary finish and superior protection, perfect for any home's exterior. It is easy to install, durable, corrosion-resistant and never needs painting. The Polycoat 9000 (TM) topcoat system will not blister, flake or crack. This 2 1/2" x 1 1/2" B-drop comes with a natural finish.