Cannula Piercing Needles - The European piercing method uses cannula needles rather than hubless, hollow body piercing needles. Cannula piercing needles are hypodermic needles--or standard hubbed hollow needles--that are encased in plastic sheaths. We offer cannula piercing needles in three sizes: 18g, 16g and 14g. Visit our Body Piercing Needles section to see alternatives to the cannula piercing needles shown here.