Section 16 Machinery and mechanical appliances; electrical equipment; parts thereof; sound recorders and reproducers, television image and sound recorders and reproducers,and parts and accessories of such articles 84 Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof 84 66 Parts and accessories for machines of 84.56 to 84.65; tool holders... 84 66 10 Tool holders and self-opening dieheads 84 66 10 00 Tool holders and self-opening dieheads Commodity Code Description 84 66 10 00 000 Tool holders and self-opening dieheads