The Micro Steerable Tail Wheel comes with the strut and a 1/2" dia. wheel. This mount can be steerable or left free to travel. Mounts directly to the tail of your aircraft with CA (cyanoacrylate) or epoxy. The arm for steering is included and is 1 1/16" wide. This unit is paintable ABS plastic and will add functionality to your aircraft without adding a lot of weight. 1/pkg. (1.75 grams/ea.)