Diablo Unicore ropes feature a black marking
at the rope's mid-point.
Diablo Unicore Features
Unicore technology effectively links the core and the sheath of these
dynamic ropes in a way that broadly limits movement between the two
parts so that they work better together. Unicore ropes eliminate sheath
slippage, allow for safe escape should the sheath be cut, makes rope
cutting easy with a simple blade without heating and reduces shrinkage
in water by more than 50%. Unicore ropes stay more supple, more agreeable
to handle and have a longer lifetime.
By having a more free-running sheath than on a "classic" rope, friction
against the rock and through the carabineers is reduced, resistance
to abrasion is improved and the effort of pulling slack and clipings
is greatly lessened. The climber really has the sensation of handling
a much thinner and lighter rope because of the increased fluidity,
whilst retaining the assurance of a rope of higher diameter.