Preformed Line Products Elastomer Splice Block Kit 8003381 (Millennium Part #522471) ships three blocks per kit for COYOTE splice tray applications. The elastomer material grips fusion splices and mechanical splices without adhesives, holding each fiber in place while allowing removal and re-entry during future maintenance. Splice crews use these blocks to organize single-fiber splices in trays where heat-shrink holders are impractical or where re-work is expected. The three-per-kit configuration lets a technician fully populate a tray in one step, making it a practical restock item for splice trailers and closure build kits on FTTH and backbone fiber optic projects.