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 suitable for use solely or principally with the machines of headings 8456 to 8465, including work or tool holders, self-opening dieheads, dividing heads and other special attachments for the machines; tool holders for any type of tool for working in the hand Commodity Code Description 84 66 10 - Tool holders and self-opening dieheads 84 66 20 - Work holders 84 66 30 - Dividing heads and other special attachments for machines 84 66 91 - - For machines of heading 84.64 84 66 92 - - For machines of heading 84.65 84 66 93 - - For machines of headings 84.56 to 84.61 84 66 94 - - For machines of heading 84.62 or 84.63