Abstract: A strap wrench adapted to fit about an object having a connection to another object, so that the connection may be tightened or loosened, comprising a flexible strap having an end attached to a securing member and a free end which is received in a securing member which provides infinite adjustment of the periphery of the strap and retains the strap at a predetermined size determined by the circumference of the object to be turned, a wrenching member is pivotally connected to the securing member and the wrenching member has a shape defining a corner or projection for bearing on the strap and exerting a force thereon when the wrenching member is rotated by a turning tool inserted therein.