Root Cutter Concave Cutter Branch Cutter Tian Bonsai Tools Master Quality Carbon Steel 215 Mm (8.5") Master quality bonsai tools made by the most experienced master craftsmen from TianBonsai, the best quality and most reasonable price. Be made by the high-carbon alloy steel, the tools have very high hardness as over HRC58, Simultaneously have performance with superior resistance to rust, much more easily if you use it to take good care for your bonsai. Quality Assurance: 3 Years, in normal use, if the tools have any problem, we will resending a new one to you without any fee, you just need to take a photo to us to show the problem.