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Specifications:

Tubing Size:  1/2" ID, 3/4" OD
Bend Radius:  420%
Break Tension:  10 Mpa (100 bar)
Operating Temperature Range:  -22°F to 158°F
UV Stability:  5 years
Quantity Info:  Priced by the foot, shipped as a single length.

Description:

Simplify your coolant!  Forget special "non-conductive" PC coolants, mixing automotive antifreeze, or messing around with UV dyes that can quickly fade!  UV reactive Feser tubing offers itself as an excellent solution for those wanting some color in their system while maintaining the simplest coolant mix possible (distilled water and some form of biocide, of course).

Lacking any particularly useful specifications, we'd rate this Feser tubing as being somewhere between Masterkleer and Tygon R-3603 in terms of softness and flexibility.  If nothing else, the colors are great and this stuff glows under UV light like nothing that we've ever seen before!