Poolhandlauf aus Aluminium: Das sind die Vorteile POOLSANA Der Pool Verus Engineering High Temp Silicone Brake Duct hose, 3.0" Dia, 12' Long, Black. Double Wall Silicone Hose is a popular choice for brake cooling ducts due to its high temperature capability and extreme flexibility. Temperate ratings for the hose is 450 degrees continuous and 500 degrees intermittently. The hose features extreme flexibility with a spring steel wire which supports the hose from collapsing. The hose ships as 12' long sticks. These sticks are 12' when tightly stretched and may be slightly smaller when relaxed.