This is a lot of 15 pieces of rain drip number a 191010, quarter circle adjustable sprayer. They will give you 4-20 gallons per hour at 25 psi. 

Use these to uniformly spray water over a quarter circle area with an adjustable radius of up to 8 feet. 

This is a brand new sealed package with 10 pieces in it, +5 leftover from another package.

Please see my other listings for many more Raindrip parts ~ I'm happy to combine shipping