Zenport MV20-6PK Professional Tree Lopper Vine Tree- Box of 6 Features The Crew Box of 6, 20 in. vine and light tree loppers have blades and hooks that are designed specifically for work in the vineyard. The blade is slightly narrower than typical to ease work in tight spots and the hook holds the material firmly in place to ensure smooth professional cuts. The special alloy steel is heat treated and tempered to produce an edge that stays sharp longer. The poly bumper is a great shock absorber and the trouble free center bolt eliminates adjustment problems. Handles are made of tough ultra-light aluminum alloy.