https://www.cat.com/en_GB/products/new/attachments/rotors/rotors/15969889.html
System H 2.2 m Milling Drum (6x2 mm spacing) Rotors | Cat | Caterpillar
System H micro milling drum features a 6mm spacing with a double hit for very fine milling finish to meet specific job specifications.
system hmilling drum
https://www.cat.com/en_GB/products/new/attachments/rotors/rotors/15969881.html
System H 2.0 m Milling Drum (6x2 mm spacing) Rotors | Cat | Caterpillar
System H micro milling drum features a 6mm spacing with a double hit for very fine milling finish to meet specific job specifications.