Zyker Manufacturing Pneumatic Tensioners PHDX series PHDX34¾” .025 - .035 ThicknessMax. Tension 2000 lbs./90 psiPHDX1141 ¼” .031 - .044 ThicknessMax. Tension 2000 lbs./90 psiAlso available with a roller basePHDX22” .044 – .050 ThicknessMax. Tension 2000 lbs./90 psiAlso available with a roller base