Reka Cleaning Set for Bassoon. Contents: Since the inner bore of bassoons has a pronounced conical course, our set for cleaning and drying bassoons on the inside comes in three parts: 1. for the entire length of the bocal. 2 and 3: For the body and boot. Both cloths are specially shaped geometrically to allow perfect wall Contact while being drawn through the instrument. The cloths are attached to a braided cloth cord, at the opposite end of which a weight is attached.