For those who have uneven terrain or rocky soil. Or you have high winds..... these wood mounts are 4" by 4" so they work perfectly for 20 or 40 inch art poles. These smaller poles automatically come with a metal wicket that stabs in the ground and the pole slips over. This application is not as robust as the auger and it is why I offer this sturdy mount. The larger poles come with an auger that I find substantial enough where you do not need this. However, if you plan to use them for a 60 inch pole or birdbath, you'll need to add a 1" shim.