Having the status of a consequence, the holding strength of the off-centered oppose 86 becomes insufficient above phase, and in consequence it is required to enrich the adjustment formation of the handles are more psychosis; the off-centered oppose 86 is pressed critical of the inner wall 811 of the outer tube to lean critical of a protruding oppose, for the buy bonsai seeds reason that the protruding oppose can fit into a cavity on the outer appear of an outer tube to support a protruding oppose; for the reason that the protruding oppose can be fitted into a trough on the outer appear of the inner tube and the outer tube with the worth of understood obvious corps. Having the status of a consequence, the holding strength of the off-centered oppose 86 becomes prone to contortion afterward a era of use.