Your friend challenged you to climb all your favorite routes by placing only nuts, so leave the cams behind and pair Black Diamond's Stopper Set Pro #1-13 with complementary quickdraws in preparation for the first FSA (First Stopper Ascent). By the end of the season, hopefully there will be scratches galore all over each stopper's colorful, shiny exterior, but at least you won't lose a single nut since Black Diamond designed each stopper with a transverse taper and rounded edges for easier cleaning.