Turn to be safe !

grabcad

I eliminated the slides which can be too difficult to remove. I eliminated the too small parts. It is necessary to remember that the strength can be applied in all directions. The profile has to be in the longitudinal direction of the rail. 1. A cam for the strength, the rotation, the ease of manipulation. 2. Extremely easy to install and remove. 3. Nothing can be accidentally collided! No handle in projection. 4. The pressure is applied on everything the height. 5. The lock is assured by the drawing of the cam, when the shape overtakes the tangeante of the circular profile of the rail. 6. Pushing the handle in his contrecam is a natural move. 7. The design is voluntarily strengthened to be able to correct the removal of material at the need. 8. No axes, so no litle parts.