The clear double flare retainer is hand blown by Glasswear Studios. The 18g and 14g are made from fused quartz glass, 16g and 12g are made from borosilicate glass. They have a small micro-flare on the end that allows them to be worn without an o-ring. Gauge tolerance is +-0.1 millimeter. Please note these are glass and can break if forced to bend. Not recommended for athletic or violent activities. Choose your size below. Note: We recommend cutting the heat sealed bag with scissors and not tearing it open. The plastic stretches easily and may put stress on smaller glass items.
