The SA-UV47 from ARS fits on the SC-EXP55 and supplies a 16.5" pole saw at heights from 7.1 to 18.5. The blade is specially hardened high carbon tool steel that stays sharper longer. It is chemical nickel finished for protection against rust and sap. It features a bark cutter to supply an undercut to prevent limbs and bark from stripping. And it includes a scabbard that completely protects the blade during transport. Made in Japan.