Master's Grade 7 PCS Bonsai tool set (kit) JTTK-03 From TianBonsai Including Long Handle Scissors (8") / Root Cutter (8.5") / Wire Scissors (6.3") / Long Handle Scissors (7") / Branch Cutter(7"), Knob Cutter(7") & Bonsai Tweezers (8") Except the bonsai tweezers was made by the 3Cr13 stainless steel, other's part in this tool set were made by the 5Cr15MoV stainless steel. their blade's hardness is about HRC58. Quality: masters grade, handmade by the master worker from TianBonsai, have the best quality in our tools. 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.