Our genuine Hallprint FPN glue-on shellfish tags are the industry's best tag for all shellfish species. The tags are made from flexible custom extruded and coated polyethylene, and printed using a unique heat and pressure process to ensure long lasting adhesion and permanent ID visibility. Published studies have shown tag retention exceeding 3 years at liberty in a harsh marine environment. Popular for mussels (freshwater and marine), oysters, clams and more. Many colors and alphanumeric ID series are available in stock for immediate shipping. Price is typically per roll of 1,000 tags, now available in very limited quantities of 500 tags as well! If your preferred color or ID series option is not available, please contact us to request a custom order, typically available in 4-5 weeks. FPN tags are applied using common household superglue. See related products for applicator forceps. NOTE: this product listing is for FPN 8x4mm single tags only. 8x4 paired tags (for duplicate marking of bivalves) and 16x8 single tags (for larger shellfish) may also be available as separate listings in the store, or by special order.