All Loki Research graphite nozzles are sold standard with a smooth unpolished surface finish. All 38mm motor cases and bulkheads are plated with a Type III Hardcoat, Class 2 Blue protective finish.
Any 38mm motor ordered may have a different Commercial nozzle or Experimental (EX) nozzle size substituted for the difference in price. You may also swap out bulkhead styles for the $4 difference in price. You need to state any changes/upgrades and any new nozzle throat size in the Comment Box at checkout. EX throat size suggestions may be found on the Tech Page.
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