Our version of the tool has several modifications to better suit it to gardening and yard work in general. We lengthened the handle to 39" and made it of vibration-dampening hickory. The 5" wide head is curved perfectly for use as a trencher; it loosens the soil and traps it in its basket-like shape for easy removal. The sharpened front edge, made from hardened carbon steel, slices through soil and roots. At only 3-1/2 lb, it is ideal for all sorts of trenching from simple drainage trenches to burying hose, rabbit-proofing fences (burying the bottom few inches) or even excavating transplant holes.
Much more intuitive and easier to use than a spade for these jobs, it substantially reduces back strain in them all.