Adaptable straws are reusable. These versatile drinking straws are available in large and small Plexiglas, and flexible polyethylene. All straws measure 460mm (18"). The small straw has a 3.2mm ( ") hole and the large straw has a 6.4mm ( ") hole. The Plexiglas can be adjusted to any angle using a heat gun. The flexible straws have a 4.95mm (3/16") hole and can be shaped easily by hand.