4inches x 28inches
One of the challenges with the other (non THD) models is that the hex end that goes into the drill can get damaged if the operator hasnt tightened the chuck well on the drill. It ends up spinning in the chuck and stripping the head. Once stripped the whole Power Planter needs to be replaced.
The solution was to make that end piece replaceable by changing the design around.
Other improvements were also made to add a pilot auger to the tip to help penetrate really tough ground as well as replaceable hardened tip blades.
So what you end up with is the main auger you can keep using for years and just replace the parts that wear down.
There is a fair bit more work involved in making these units so the price is higher, but the cost savings over the space of a few years, well and truly make up for it.
We recommend using the Dewalt 54V joist drill to run these. (An 18v drill is not powerful enough for these larger Power Planters)
H - metal adaptor is for drills with a regular tightening chuck. (Most customers get this one)
For DIY home garden Power Planters, please see the Home Gardener Range at this link.