The Black blade is designed for Austrian conditions. There they have been scything for hundreds of years and have smooth meadows.
The 75 cm blade is the blade of choice in Austria. In New Zealand where the land is often quite lumpy, you may need to use a wedge in order to raise the blade above the lumps.
This is the blade to choose if you want the result to be a short finish- like a lawn.
It comes in 2 lengths 65 and 75, but we are out of 65s at the moment.