['< sod > [ [ image : guitar pick picks - kayess - 1. jpeg | thumbnail | right | 200px | various guitar picks. clockwise from top : a standard nylon pick ; an imitation tortoise - shell pick ; a plastic pick with high friction coating ( black open areas ) ; a stainless steel pick ; a belt pick again approximating a [ [ reuleaux triangle ] ] ; and a tortex " shark\'s fin " pick ] ] < eod > < sod > [ [ file : guitar picks - kayess - 1. 0 jpeg | thumbnail | lower right | 200px | various guitar picks. clockwise from top : a standard nylon pick ; an imitation model tortoise - shell pick ; a plastic pick with high friction coating ( black areas ) ; a replica stainless steel pick ; a velvet pick approximating a [ [ reuleaux triangle ] ] ; and a tortex " shark\'s fin "... pick ] ] < eod >']