Prostock CPJ34 ProStock 3/4
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ProStock 3/4" Press Jaw for Copper - CPJ34

SKU: 934648
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$ 101 .35 / ea
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Product Details

Manufacturer: Pro-Stock
Product: Press Jaw
Material: Steel
Trade Tool Type: Plumbing
Use: Plumbing Applications
Size: 3/4"
Mpn # CPJ34
Shipping Dimensions 28.0" x 9.0" x 18.0"
Weight 5.00 lbs.
Shipping Dimensional Weight 25.72 lbs.

About the ProStock 3/4" Press Jaw for Copper - CPJ34

A jaw-dropping way to crimp faster!


The ProStock CPJ34 3/4in copper press jaw is the ultimate fusion of precision, power, and performance, designed to deliver flawless, leak-proof crimps with every press. Expertly optimized for the ProStock 18V press tool, this jaw ensures seamless compatibility and maximum efficiency, allowing professionals to work faster, smarter, and with greater confidence. Its easy-opening design enables effortless one-handed operation, making installations faster and more convenient, even in tight, hard-to-reach spaces. With a nominal size of 3/4in, this durable press jaw tackles residential, commercial, and industrial copper pipe connections with ease, creating strong, lasting seals that stand up to high-pressure demands.


Versatility meets reliability with the CPJ34 press jaw, engineered to work seamlessly with all major fitting manufacturers including Grinnell G-Press, Elkhart APOLLOXPRESS, and Viega ProPress copper systems. This ensures unmatched flexibility on the job, allowing professionals to confidently use the fittings they trust without limitations. Whether handling single installations or high-volume projects, this press jaw delivers consistent, high-quality crimps that save both time and labor costs. Also included in the ProStock CPJKIT1 copper press jaw kit, this jaw is a must-have addition to any professional’s toolbox—offering robust construction, effortless usability, and elite-level performance for industry pros who refuse to compromise on quality.


With nearly 40 years of industry expertise, ProStock is built by plumbers, for plumbers, delivering job-proven tools and essentials trusted by professionals nationwide —from large-scale developments to ultra-luxury homes. It provides high-quality, reliable products at competitive prices, ensuring tradespeople save money on every order while keeping their trucks stocked with the tools they rely on daily. Explore its high-quality, plumber-approved tools and essentials today at PlumbersStock and stock up on the products you need to work smarter, faster, and more efficiently. Shop now and save!

  • Jaws That Mean Business: Designed to work seamlessly with the ProStock PS89241M 18V press tool, this 3/4" press jaw delivers fast, consistent crimps for professional-grade copper pipe connections —every single time.
  • One Hand, One Press, One Perfect Crimp: Featuring an easy-opening design for effortless one-handed operation, this jaw lets you press fittings faster and with less effort —even in tight, awkward spaces like crawl spaces and overhead piping.
  • Bite Into Versatility: This jaw works with all major copper press fitting systems, including Viega ProPress, Elkhart APOLLOXPRESS, and Grinnell G-Press systems, so you can use the fittings you trust without limitations. One jaw, endless possibilities.
  • Fast Press, No Stress: Say goodbye to slow, messy brazing and open-flame hazards —this press jaw allows for quick, flame-free, leak-proof crimps in seconds, keeping your projects moving safely and efficiently.
  • A Press Kit Essential: This copper press jaw is also part of the ProStock CPJKIT1 press jaw kit, giving you a complete set of tools for efficient, high-quality crimps. Whether you're purchasing it individually or as part of the kit, this jaw delivers precision and power for every press job.

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