Water Cooling Tubing - diameter 11.1mm/15.9mm, length 3m, flexible, transparent The EK Water Blocks hoses are flexible and capable of making sharp bends in the cooling circuit. The hoses are easy to install and deliver zero performance loss giving you complete confidence in your system.Parameters and specifications of EK Water Blocks EK-DuraClearHighly durableUV-resistantDurable inner wallEnvironmentally friendly, safe and non-toxic productSufficient length: 3mInner diameter: 11.1mmOuter diameter: 15.9mm