TE Connectivity AMP-Latch Strain ReliefsAMP-Latch strain reliefs made from glass filled polyester.Part numbers X-1437020-X & X-1437021-X are strain reliefs 609 series female socket connectorsPart numbers X-499252-X are strain reliefs for AMP-Latch Novo and Ultra ATA complaint bus connectorsPart numbers X-111547-X are strain reliefs for Universal I/O pin connectors without mounting earsPart numbers X-100103-X are strain reliefs for AMP-Latch MIL type receptacle connectors