</font><font color="blue" class="small">( How does it dig in clay)</font>
Well, let me describe my situation; it may be different than yours. I have anywhere from 10" to 4' of clay topsoil sitting on top of hardpan that water cannot penetrate. The land is also flat so water goes down but not much drains away. During winter rains, my clay turns into soup. Drilling in this stuff is about like drilling a hole in water. I have a very brief window of time in the spring when the soil has just the right amount of moisture to dig. A few days later and it's hard as brick and the auger just spins around. To dig in our hot dry summer, I have to wet the ground, let the water soak in, then let it dry just the right amount. With the right conditions, it augers very well. In other soils it should do fine. If you have clay, but not the hardpan, and a subsoil which permits water to drain deeper, you might not experience such a difficult time. I should let you know that the tip on the end of the Greene auger is very blunt. There ore other augers (I'm being technical here in that I mean just the part that looks like a drill bit) which will take tips with sharp carbide edges or "fishtail" tips which might work in soil like mine when it's dry. You could order just the post hole digger from Northern and try to find a compatible auger with a sharper tip from someone else if you think digging in dry clay will be a problem. I shopped around looking for a sharper tip to put on the end of my Greene auger, but the diameter and thread sizes were never compatible. I'd need to buy an entire auger, AND make sure it matched the connection where the auger and PHD bolt together. Hey, GOOD LUCK. Let us know how it all turns out.