High efficiency, high quality small nozzles designed for 1/8", 1/4" & 3/8" pressure washer and jetting equipment. Small nozzles are typically custom drilled for your specific jetter pump ratings but higher-end nozzles are configured with steel inserts. Over time water will eventually erode the nozzle jets, decreasing the operation efficiency. Nozzles with inserts can be refreshed to like new operation by installing a new set of inserts, increasing the life of the nozzle.