Irritrol's HS100 1/2" Shrub Nozzle Adapter comes from the Irritrol Parts Series. It has a 1/2" FNPT thread. This adapter allows you to attach a shrub nozzle to any Irritrol spray head. Irritrol has made their name as a brand by selling and marketing exclusively to the professional installer, as a result their products are geared to be dependable and durable. Irrirtrol is now making their products available to you through our website. If you are looking for a product line that will last year in and year out, Irritrol is the brand for you.