This support is designed to withstand the pressure exerted by the grafting scissors. It works while you are making cuts with the upper part of the scissors and holds the stem when you want to make a cut for grafting.
The material of the cutting support of the grafting scissors is very resistant and, thanks to this piece, the cut will be more accurate because it allows the stem does not move.
In addition, this spare part has a channel shape, which allows the grafting scissors blade to fit perfectly and perform the work efficiently.