This is the Tail Wheel Assembly for the Flyzone Acro Wot MkII. FEATURES: Black foam wheel White plastic parts Fits on the Flyzone Acro Wot MkII (FLZA3310 and FLZA3312) INCLUDES: One tail wheel assembly REQURIES: Installation on airplane SPECS: Diameter: 1.22" (31mm) tlc 9/19/12