The Red Dawg Root Dawg from PipeHunter has an easily field-rebuildable component design. The rotating forward jet is flow straightened to make sure it removes organic blockages. It is safe to use in any line type without the fear of incurring damage in the line. It has an easily replaceable acetal ball skid, stainless steel rear adapter and replaceable stainless steel rear inserts. It is ideal for use on 4- to 12-inch lines. 281-485-9513; www.reddawgnozzles.com.