The Park Tool 100-5D Professional Micro-Adjust Clamp, click to enlarge
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Item # 100-5D

/ Repair Stands / Clamps

Professional Micro-Adjust Clamp

A durable, versatile, easy-to-use clamp built for everyday shop use. Features a cam-actuated micro-adjust clamping system for easy entry and exit, which opens to fit nearly any tube from 23 to 76 mm (7/8" to 3"), including aero tubes. With infinite adjustability, there's no need to worry about accidentally crushing or damaging delicate carbon fiber tubing. Narrow clamping jaws fit into tight areas or onto short seat posts. The 100-5D is built to last, with a powder coated precision-machined die-cast aluminum main body and durable, replaceable jaw covers.

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100-5D Features

  • Clamp capacity: round and aero tubes from 23 to 76 mm (7/8" to 3") wide
  • Jaw height: 70 mm (2.75")
  • Replaceable jaw covers (part #1960)


  • PCS-4 (post-6/96 — with composite top tube)
  • PRS-7 (post-6/96 — with composite top tube)
  • PRS-5 (post-6/96 — with composite top tube)
  • PCS-1 models manufactured post-2002 (NOTE: Inspect top tube below lever for an embossed "939")

Support Articles


Parts & Accessories


Replacement Parts


Replacement Jaw Covers

Compatible Products


Home Mechanic Repair Stand


Deluxe Home Mechanic Repair Stand


Deluxe Home Mechanic Repair Stand


Professional Race Stand


Bench Mount Repair Stand


Bench Mount Repair Stand

Park Tool Professional Micro-Adjust Clamp - 100-3D, 100-5D, 100-25D