IDE style hard disk cables

For the well dressed classic build, custom length cables.Not sure who’s custom, but we describe each as overall length,controller or mobo connector, then inches of cable, connector,repeat. A length with ‘x’ has the ‘pc twist’, a connector with ‘r’is on the back side of the cable. Also DIP connectors can beunindexed, or include ‘k’ (key and slot) or ‘p’ (plugged pin).