A:G1/4 [1 Front 3 Rear]B:G3/8[ 1 Front 3 Rear]C:G1/4 [Rotating 3 Rear]D:G3/8 [Rotating 3 Rear]【High Quality】This sewer jetter nozzle is made from high quality 304 stainless steel meterial, durable and rust resistant, has good performance and long service life[G 1/4]: Ideal for general water pipe flushing and cleaning, provides excellent cleaning effect, clean sewer blocked. Also used with high pressure washer hose. Enough to clean in the narrow space, as picture show.[1 Front 3 Rear]: Includes 1 front jet at 0° that clears blockages, 3 rear jets at 45° flush out debris loosened by the front jet.[Rotating 3 Rear]: The 3 jet orifice is used for sprinkling into the clogged pipe while move through the pipe.[High Quality]: Working pressure is up to 4000 PSI. Water temperate is up to 310° F.[Note]: Please confirm the thread type and size before purchase.