The invention relates to a device making it possible to pick up weights from a slat arranged in a box, and then fit them without losing any and without deforming them on a fishing line or hair. This device consists of two arms 2 which join on the heel side 3 and widen out on the other side, in order to allow pressure at the moment of use, then come together. Two jaws 1 grip the weight 7 and widen out in a female cone 6 in order to allow the engagement of different diameters of weights 7. The device has two projections 3 on its heel, which projections facilitate its holding. Two other projections 5 aid the opening of the clamp in order to free the line and the weight. A hole in the heel of the clamp allows attachment to a comb or the passing of a cord. <IMAGE>