D'Andrea 347 Rounded Teardrop Delrex Delrin Guitar Picks - One Dozen Blue 1.0 mm 347 Rounded Teardrop Delrex Delrin Guitar Picks - One Dozen Blue 1 0 mm D'Andrea 347 guitar picks are made from durable Delrin formula plastic and tumbled and finished with a flat matte surface for grip Set of 12 D'Andrea 347 guitar picks are made from durable Delrin formula plastic and tumbled and finished with a flat matte surface for grip Set of 12