A very handy tool. It lets you lock the engage switch with the on switch which is very helpful for this old body of 84+ years. I have not run out of power the times that I have used it. I simply plug it in when I'm through with it and it is ready to go the next time I want to do that kind of trimming. This is especially handy around sprinkler heads and trees--the sprinkler heads to keep from destroying the blade and the trees to keep from cutting the bark.
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