If any of you have had the displeasure of trying to dig through caliche, then you understand why I made this. It's just a 36" pipe section with a brass tip (1/4" hole) on one end and a hose fitting with ball valve on the other end. I can push down a full 24" in caliche with this (regular water pressure) in about 30 seconds or so. Larger holes, I just do a series of holes in close proximity, use a caliche bar to break up between the holes, and a post hole digger to clean it out. Messy as a two year old in a room full of open paint cans, but very effective.