I was doing a simple spray head replacement. Ordered six new K-Rain RPS Select heads after watching the associated video. Great product, great price and oh, so versatile. Very easy install. I also ordered a couple poly cut-off risers to assist in lifting the heads a little higher for some placements. Sprinkler Supply Store is fast, efficient and very helpful. They even mailed me a head adjustment tool I thought I was missing from the shipment. My bad, I did find it when doing the box tear-down for recycling. So now I have a spare. Good job to all. I recommend them without hesitation.