STRAIGHT COUPLERS - Easy assembly/disassembly, no tools required, low profile design - Provide an air and water tight connection - Designed and tested to meet or exceed industry standards - Color coded to easily identify by size - Available for all Microduct sizes 5mm–27mm - Specially designed to ensure a smooth interior transition - Withstand chemical and harsh environment conditions -"HD" or"Heavy Duty" denotes enhanced pull-out and pressure characteristics Part / Catalog listings identify this item as the Dura-Line 16mm straight microduct coupler (16/12 mm OD/ID), manufacturer part 20001517. Manufacturer-hosted product/PDF references were discovered but were blocked from full rendering; distributor pages (linemen-tools, Primus Cable, Platt) and an eBay listing were used to extract product details.