180mm Black Carbon Steel Ryuga Round Branch Cutter. A must have tool for removing unwanted branches from your smaller bonsai trees. This branch cutter has a rounded blade for leaving hollows when making cuts. They are also known as concave branch cutters. They aid in a quicker healing times by allowing the cambium to roll over into the wound. If you want a flat branch cutter please look for the standard branch cutters. These are the smaller sized round branch cutter available from this range, Ideal for working on smaller trees. There is also a medium size available in this style.