Large Stainless Bonsai Root Cutters by Roshi Tools 10.6" (269 mm)

Root cutters are designed for removing tough old roots. Because of their reach and the shape of the blades, they are especially good for removing roots immediately below the base of the trunk, but will do the job on large roots almost anywhere. 

10.6" (265mm) - Made for Stone Lantern by Roshi Tools.