3 pcs. - install on the silencer installing face of the 50 / 55 size helicopter engine. Since it is made of phosphor bronze, it assures more tight fit which prevents from exhaust leaking and improves the durability of the fitting area and maintenance.
To install on the silencer installing face of the 50 / 55 size helicopter engine. Since it is made of phosphor bronze, it assures more tight fit which prevents from exhaust leaking and improves the durability of the fitting area and maintenance. included 3 pcs.
