Section 18 Optical, photographic, cinematographic, measuring, checking, precision, medical or surgical instruments and apparatus; clocks and watches; musical instruments; parts and accessories thereof 92 Musical instruments; parts and accessories of such articles 92 09 Parts and accessories for musical instruments; metronomes, etc 92 09 91 Parts and accessories for pianos Commodity Code Description 92 09 91 00 Parts and accessories for pianos