The original is so called as the inventor developed it first. He was a very keen gardener who had a health event and afterwards had restricted energy, so he developed the Ploskorez range for easy ergonomic use.
It is sharp on both sides, so can be used to cut vegetation, with a swinging motion.
The end of the blade can also be used to scrape- for example between stones in a pathway, or along a wall.
This is a steel hoe.