Abstract: A socket wrench has a box end which confines an internal wall therein. A pair of rollers are connected rigidly by an eccentric shaft and are received in the box end. A pair of retaining plates are provided in the box end on both sides of the box end so as to retain the rollers therein. A resilient plate is provided between the rollers adjacent to the eccentric shaft. An inverted V-shaped rigid pawl member is provided around the eccentric shaft and includes a first and second section. The first section includes a curved first side formed adjacent to the internal wall of the box end, a straight second side forming a first clearance with the eccentric shaft and a free end interconnecting the curved first and straight second sides and which is biased by the resilient plate so that at least a portion of the curved first side adjacent to the resilient member frictionally abuts with the internal wall.

Abstract: A supporting device includes a vertical tubular support apparatus, a connecting members which is engaged with the vertical tubular support apparatus and has a plurality of lug members, a plurality of engaging members each of which is pivotally mounted to one of the lug members, a plurality of resilient apparatuses each of which is disposed in one of the engaging members and has a strap, and a plurality of legs each of which is mounted to one of the engaging members. A curved end of the strap abuts a positioning pin of the engaging member and urges it to selectively engage one of a plurality of angularly spaced notches of the lug member, so the angle of each of the legs relative to the connecting member can be adjusted for convenience of use, moving, carrying and storage, or for use on an uneven surface.