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Park Tool Professional Micro-Adjust Clamp


After years of research and testing we’ve built what we consider the best shop clamp made. It’s smooth, versatile and built to stand up to everyday shop use.

  1. Fits PCS-4, PRS-7, some models of PRS-5 (with composite top tubes), and PCS-1 models manufactured post-2002 (NOTE: Inspect top tube below lever for an embossed “939”)
  2. Grips nearly any tube from 7/8″ to 3″ (23–76mm), including aero tubes
  3. Narrow clamping jaws (2.7″/7cm) fit into tight areas or on short seat posts
  4. Infinite micro adjustability allows perfect clamping pressure every time and prevents damage to thin-walled tubes
  5. Cam actuated adjustment system for quick entry, adjustment and exit
  6. Durable, replaceable jaw covers
  7. Built to last: Powder coated, precision machined, die-cast aluminum main body parts and high quality small parts
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