Toro 570Z Sprinkler Body, 2" Flush Plugs Installed on all bodies, keeps debris out when flushing sprinkler lines Water Smart Zero flush - no water loss at system start up 1/2" (1.3 cm) NPT Inlet Threads directly to standard 1/2" (1.3 cm) risers Superior Seal Professional-grade seal protects the sprinkler from dirt and debris Ratcheting-Riser For fine-tuning arc adjustment after installation