Description Just in time for building projects, the Secraft tail wheel assembly is sure to be a hit. Each size is very scale-like in appearance and includes a lightweight tail wheel, pre-formed titanium wire with installation brackets and aluminum mount that's up to the toughest challenge. Easy to install, the titanium Secraft tail wheel assemblies are a perfect match for large IMAC R/C airplanes. Super lightweight, total weight of the tailwheel assembly only 100g. Color: BLACK Wheel specs: Diameter  1 1/2" (38mm) Width   15.5mm Axle Dia.: 3mm Weight: 20g      *See additional pictures for dimensions.