SCSI High Density Interconnect electronic cable uses 28 Gauge (AWG) stranded tinned conductor SR-PVC insulation .028" Nom. OD. Conductors are then twisted into wire pairs with varying left-hand lays to reduce crosstalk. The required number of pairs are cabled with a left-hand lay, then shielded with both an AL/PET tape (AL side out) and braid shield. A 28 gauge (7/36 TC) drain wire is pulled in between the shields. The HDI cables are jacketed with Pebble Gray Hi-Flex PVC.