Comparison of the Li, Be, and V sin i observations in the Hyades and Praesepe (filled and open grey squares, respectively; triangles are for abundance upper limits; see Table 1 for references) with the predictions of models (blue diamonds) and for different values of and K (colour-coded, see also Table 3). Model predictions are shown at 0.75 Gyr. The grey dashed line represents the empirical relation in the cold edge of the dip obtained by Cummings et al. (2017).