Description This knob shearing tool is incisive, mainly used for trimming small bonsai shape, easy to use. After pruning, a concave hemispherical incision is left, and the healing resin will cover the incision, leaving no pruning trace. These bonsai tools are great for the advanced or starter bonsai enthusiast, reducing branch stubs leaving a recessed trace. Features Concave knob tool -Color: Black. -Material: Manganese steel alloy. -Size: Overall length: Approx. 21 cm/8.27 inch. Slitting edge: Approx. 2.06 cm/0.81 inch. Opening: Approx. 6.5 cm/2.56 inch. Maximum diameter: Approx. 1 cm/0.39 inch. Wipe clean and lightly oil after every use. The handle is in line with ergonomics, comfortable, time-saving and labor-saving. Package Including 1 * Concave knob tool