Abstract: A jumper sleeve for connecting and disconnecting a male F connector to and from a female F connector includes a wrench portion and a grip portion. The wrench portion has a leading end, a trailing end, and a hollow main body located between the leading end and the trailing end. The main body of the wrench portion internally has a hexagonally shaped portion corresponding to a shaped outer surface of a rotatable connecting ring of the male F connector. The grip portion has a rear end and a front end connected to the trailing end of the wrench portion, and has a plurality of circumferentially spaced externally convex sections, each of which has a radially inward key formed near the rear end thereof. The jumper sleeve provides greater mechanical advantage to produce sufficient torsion force, enabling easy installation and removal of the male F connector.

Abstract: A coaxial cable connector includes a standard and a mini adapter. The standard adapter includes coaxial hollow inner and outer sleeves. The mini adapter includes an inner member having a finger clamp; and a cylindrical housing having a first and a second tubular end portion. The first tubular end portion is externally formed of elastic hooking portions corresponding to the finger clamp in the mini adapter, and a plurality of long slots behind the elastic hooking portion. A contact spring is provided in the mini adapter with contact strips thereof received in the long slots. When the mini adapter is fully inserted into the standard adapter, the inner sleeve compresses the elastic hooking portions to thereby force the finger clamp to engage with a central conductor of the coaxial cable, and pushes the contact strips to mechanically and electrically engage with a foil layer of the coaxial cable.

Abstract: A tool including a tubular wrench portion and a hollow grasping portion. The tubular wrench portion has a first end, a second end, a hollow body portion located between the first and second ends and a plurality of arc portions located at the first end. The hollow body portion has a first slot extending from the first end to the second end. The arc portions have an outer surface for installing the C-shaped fastening ring thereon to generate torsion and an inner surface formed with a shaped portion to engage with a shaped outer surface of a connector ring. The arc portions are outwardly extended by the torsion when a predetermined torsion is enough to deform the arc portions of the tubular wrench portion.