Wheatware Ultra Heavy Bass Guitar Picks, 12 Pack, 2.0mm Ultra Heavy (2.0mm) used for Bass Guitar strings with easy grip, non-slip raised lettering World's first biodegradable, award-winning, wheat Bass guitar pick! Crop-based, reduces oil dependence, made in the USA! Easy to grip, non-slip raised lettering. When done, throw in the garden, they biodegrade and disappear. They provide a great tone with a natural feel...not just a pick...inspiration!