HM-4#3B-Z-05,06,09,10 (HM-4#3A-Z-32,35,33,34): Metal Head Set: Includes 4 CNC Metal Parts to Upgrade 4#3 & 4#3A or Severvice 4#3B & Novus FP

CNC metal head upgrade set for 4#3 and 4#3A... includes 4 parts: HM-4#3B-Z-05, HM-4#3B-Z-06, HM-4#3B-Z-09 and HM-4#3B-Z-10. This is a complete set of parts to upgrade your 4#3/4#3A plastic head to CNC metal head.