Hunter MPTOOL MP Rotator Adjustment Tool, Orange

Works well to adjust radius of sprinkler, the screwdriver doesn’t work as good.

This works but adjusting the angle was just as easy by hand and not the tool. The tool works but not necessary. The screwdriver end is better than trying to hold a screwdriver in place. This tool has the metal blade surrounded by the plastic shield so it it stays on the sprinkler screw better but it doesn't just slide into place as I expected since the plastic cone should be larger diameter to force it into place on the sprinkler head. But still better than small screwdriver.

I thought I was buying this tool to adjust the arc of spray of my MP Rotators. This tool is completely unnecessary for that, you can turn that easily by hand.The critically important part of this tool is a tiny straight-blade screwdriver embedded in one end. That screwdriver adjusts the distance that your MP Rotator throws water.It is almost impossible to turn the screw using a standard screwdriver, it just slips off. This tool has a well in the plastic around its blade that makes it a perfect fit, making it really easy to turn that screw.I also found this tool useful for rotating the sprinkler head to set the left-hand start of the spray - I would turn it all the arc adjustment all the way to the right to where it hits the stop and after that the entire spray head starts 'clicking' to the right. When I reach my desired left-hand start position, I then move the arc adjustment to the left to get my desired arc width.

It's simple, it works. There's not much to it. The tiny screwdriver on the end adjusts radius (how far the sprinkler throws water) and the ring adjusts the arc (how wide or narrow the sprinkler pattern is).The screwdriver is so tiny that it's pretty fiddly to get it into the corresponding notch on the sprinkler head. And since these adjustments need to be made while the sprinkler is running, the ring can cause considerable splash-back if you don't get it seated correctly in a hurry, or if you accidentally try to fit it upside-down (don't ask me how I learned that). Oh well, it's hot outside, so a little dousing with water isn't the end of the world.My 2nd biggest complaint is the cost. For such a simple little piece of plastic, you get kind of dragged over the coals when buying and shipping a single tool online. Maybe they're cheaper at the local big-box stores.And my primary complaint is that these even need to exist at all. Rainbird figured out how to make tool-less adjustments for their R-Van rotator heads' radius and arc. I hope that Hunter follows suit soon and develops an MP Rotator that you can adjust with your hands instead of having to keep track of a fiddly little tool that's just begging to get lost in your garage.

cheaper ace ACE True Value

The rotar part works but the tip doesn't, I use a small flat head screwdriver. Since it wasn't expensive I decided I'll keep it.

works

Very good