20" Power Rake, for thatch removal before overseeding.
A dethatcher (also called a power rake) removes thatch from a lawn. Thatch is a layer of semi-decomposed grass and organic material that accumulates above the soil faster than it can be absorbed. Thatch build-up is a normal occurrence and is not necessarily harmful to the lawn, until it gets too thick. Poor mulching mower performance can be a big contributor to thatch build-up.
Excess thatch forms a barrier between soil and the water, nutrients, and air required for a healthy lawn, and it may serve as a perfect breeding ground for damaging lawn diseases. If thatch is more than ½ thick, you should consider dethatching.
The easiest way to test this is to take a garden trowel, dig a small hole, and measure the organic material at the top of the soil. It should not exceed ½". You can also use a hollow metal pipe to remove a core of soil, and measure that way. However you do it, it’s best to check several areas of your lawn, since build-up can be irregular.
SPECIFICATIONS: