Adjustable dismantling tool for annular member

An adjustable dismantling tool for annular member, including:

• a handle, having a first end, a second end corresponding to the first end and an axial direction passing through the first end and the second end;
• a first main body, disposed at the second end, being radially unmovable relative to the axial direction;
• a second main body, disposed relative to the first main body, being radially unmovable relative to the axial direction, being rotatable relative to the first main body around the axial direction, formed with a plurality of guiding troughs radially relative to the axial direction;
• a plurality of movable members, each having a guiding block slidably disposed in the corresponding guiding trough, provided for extending into an interior of an annular member to operate;
• and
• a plurality of connecting arms, disposed between the first main body and the second main body, each connecting arm pivoted to the first main body and one of the guiding block to form a first pivoting portion and a second pivoting portion respectively, each connecting arm swingable about the first pivoting portion along a direction around the axial direction.