This is a pack of  high quality spray jets and just the same as hozelock made by Antelco Australia.

These can be screwed directly into the end of micro tube 4mm or the main supply tube 13mm and 16mm,

also into rigid risers and any stake that takes micro threaded fittings compatible with hozelock, claber and other watering systems. These are  professional quality irrigation fittings. UV Stabilised

Micro jet Information;

At 1Bar Pressure; 
The 360/ 180 / 90D have a maximum radius of 2 meters and flow rate of 55 litres per hour.
the yellow mist Jet has a radius of upto 50cm and 18 litres per hour.