AR6060 Details Fusion Round Pattern Mix Chamber Kit..(03) Mix Chamber with cleanout drill bits..Nozzle size 0.86, #44 Drill, Impingement Port Orfice Size .060, #53 D... Details Back Fusion Round Pattern Mix Chamber Kit..(03) Mix Chamber with cleanout drill bits..Nozzle size 0.86, #44 Drill, Impingement Port Orfice Size .060, #53 Drill