Professional double blade shears with an interchangeable cutting unit The blade, made of high carbon percentage, are hot forged. converging rounding in the center which increases its penetration into the branch allowing a clean and precise cut, this prevents the scarring of the bark of new sprouts. These pruners are ideal for fruit trees. The universal grip of the shears allows both right-handed and left-handed operators to use them. The handles made of light aluminum alloy are hot-forged. This system allows Castellari to provide a lifetime guarantee against breakage. The surface anodizing treatment makes the pruner more resistant over time. The surface is then covered with non-toxic slip resistant material. These pruners are completely interchangeable and adjustable, just like all manual pruning tools.