Premium braided sleeve material made these wires stiff, rigid and yet flexible, as a result has a wider curve radius than those soft and flimsy wires. It is recommended that bending the wire to the curve that is needed before installing. These sleeved cables might be challenging to work with at first but once you have them in shape, they tend not to sag or interfere with any other components. Each individual cable is very well done and no shrink wrapping on the sleeves. Invisible heatshrinks will offer fresh and clean system appearance for your build. The connections between the cables and the board are very tight. No worries for cables and pins coming loose and fall out of place.