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One-Way Barrel Tensioner

One-Way Barrel Tensioner

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One-Way Barrel Tensioner

Centaur’s low profile tensioners mount unobtrusively to end or line posts, preserving the traditional rail appearance. Specially designed for 5″ flexible rail, these tensioners are crafted from heavy duty steel and powder coated to help prevent corrosion. Barrel tensioners make installation and adjustments simple and fast. The block and sprocket design requires no special tools. Tensions with a standard 1/2 inch drive socket wrench.

  • Designed to terminate and tension 5" rail around corners and straight lengths up to 660 feet (for every major directional change, deduct 100 feet).
  • Needs to be installed on a 6 to 8 inch wood termination post.
  • For Centaur® and CenFlex® fence systems only.
  • All Centaur’s Sure-Fit® Accessories are produced to the highest quality standards, assuring you a fence installation that will stand the test of time.


  • Special SPAX CUT point: precision placement, allows screwing in without pre-drilling (wood-dependent), effectively reduces splitting and bulging of the material
  • Small 75° milling head: ensures flush countersinking
  • Partial thread: firm tightening of the upper wood layer





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