I use it to transplant my tomatoes into my garden and also to plant grass plugs on my 15 acres. It is the best thing I have ever used for plugging grass. I am 78 years old and can move 200 plugs per day with no problem.
The video shows it being used to transplant tomatoes. Sorry it is not better, but **** happens. I will try to replace it. The photos show it being used plugging grass. The 4th photo shows removing a plug of bermuda grass. The 5th and 6th show it being set out at a bare spot in the yard. I usually plug 100 or more, load them in a little red wagon, haul them to bare spot, plant them, loading the bar plugs in the wagon, then take them back where I got the grass plugs, and refill the holes with the plugs removed from the bare spot. Unless you hunt for it, you wouldn't know I did anything. The yard is as smooth as it was before I did the plugging.
The cutting tube and top handle is made of stainless steel. The plunger and the rest of it is mild steel. I welded it with a MIG welder. The little hose clamp on the bottom holds 2 pieces of angle iron acting as an adjustable depth control. I would be happy to answer any questions about it. It is one of the most used tools I have ever made.