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These no-flare tunnels are made from 316L stainless steel. They have a wearable area of 5/16" between the o-rings. They're grooved on both ends to holds the o-rings more securely. Four o-rings are included. These are available in size 5/8" only.
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We currently ship within the US, with more countries coming soon.
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🇺🇸 Ship from USA · On Agora since 2026
$8.98