Wobblers are the best sprinkler head available as they operate well in a large pressure range and water evenly every time.
A single head will cover approx. 7.5m x 7.5m area at 20psi
Each head comes with a grey nozzle #9 9/64" nozzle .
Max Pressure is 85 psi though flow and spray diameter will cap at 2.8 gpm and 52 ft for each wobbler.
Wobblers are great overhead sprinklers for both the field and inside poly tunnels.