['< sod > [ [ image : traditional guitar picks - kayess - 1 1. jpeg | thumbnail | right | 200px | various guitar picks. clockwise from up top : a standard nylon pick ; an imitation wood tortoise - shell pick ; a plastic pick with extremely high friction coating ( black areas ) ;... a stainless steel pick ; a pick approximating a [ [ reuleaux triangle ] ] ; and a tortex " shark\'s fin " pick ] ] < eod > < sod > [ [ file : guitar picks - kayess - 1. jpeg | thumbnail | right | 200px | various guitar picks. clockwise from top : a standard nylon pick ; an imitation tortoise - monster shell pick ; a plastic pick also with high friction coating ( black areas ) ; and a stainless steel steel pick ; a pick approximating a [ [ reuleaux triangle ] ] ; and a tortex " shark\'s fin " pick ] ] < eod >']