Abstract: There is disclsed an improved clamping system for releaseably securing two external members (30) and (40) each to the other. The improved clamping system includes a hook member (3) which is fixedly secured to external member (40) and a chassis mechanism (2) which is fixedly secured to external member (30). The chassis mechanism (2) includes a U-shaped supporting frame (21) having a spring (22) passing therethrough. A clamping mechanism (1) is provided which includes a rotative displacement member (12) having an eccentric groove hole (124) formed in a lower disk member (121). A bridge plate member (13) having a central opening (131) encloses and provides a linear restraint for a sliding plate member (14) which includes a slot (141) passing therethrough. An insertion pin (15) passes through the slot (141), the central opening (131) and is insertable within the groove hole (124).