Part number 20001491 is referenced in Dura-Line materials and reseller catalogs. Manufacturer Micro Couplers documentation lists 20001491 as a 27mm straight micro-coupler. Distributor/reseller pages (Fiber Savvy, Graybar) list the same MCN as a 0.75" Push-Lock / 27mm Push-Lock coupler. The product is described in available literature as a non-metallic (HDPE / molded plastic) coupler offering push-on assembly, self-locking ring, pre-lubricated O-ring for air/water tight seal, re-enterable design, and suitability for cable pulling and jetting. Manufacturer PDFs were discovered by search but could not be rendered due to the manufacturer's site security; distributor pages and reseller documents were used to supplement missing details.