Information:

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

Features:

• #100-5D fits PCS-4, PRS-7, some models of PRS-5 (with composite top tubes), and PCS-1 models manufacturer post 2002. (Note: Inspect top tube below lever for an embossed "939")
• Grips nearly any tube from 7/8” to 3” (23–76mm), including aero tubes
  Micro-adjustability allows perfect clamping pressure every time and prevents damage to thin-walled tubes
• Long travel cam handle allows quick entry, adjustment and exit
  Versatile: It grips nearly any tube including aero shaped tubing and seat posts 7/8” to 3” (23mm-76mm). Its narrow clamping jaws (2.7”/7cm) are designed to clamp securely yet fit into tight areas or on short seat posts.
• Durable, replaceable jaw covers
• Soft Touch saddle cradle provides a perfect spot to temporarily rest a bike by its saddle
  Built to last: Powder coated, precision machined, die-cast aluminum main body parts and high quality small parts
• Fast operation: Cam-actuated adjustment system for quick entry, adjustment and exit, plus handy “spinner” handle helps speed large size range adjustments.

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