284140 Parts and accessories for metalworking machine tools

28414030 Parts and accessories for metal cutting machine tools (excluding tool holders and self-opening dieheads, work holders, dividing heads and other special attachments for machine-tools) 28414050 Parts and accessories for metal forming machine-tools (excluding tool holders and self-opening dieheads, work holders, dividing heads and other special attachments for machine-tools) 28414070 Parts and accessories for machine-tools operated by ultrasonic processes