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Tweco Copper Ground Clamp - 300 Amp GC 300

Code: GC300
Tweco Copper Ground Clamp - 300 Amp GC 300+ CLICK IMAGE TO ENLARGE
Cyberweld Price: $36.85
Mfg Industrial Price: $60.05
You Save:  $23.20
Availability: Usually ships the next business day
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Tweco® Copper Ground Clamp - 300 Amp GC 300

Genuine Tweco® Professional Copper Ground Clamp with Ball-Point Cable Connection

  • Copper cast upper and lower jaws
  • Insulated Spring
  • Heavy Duty Spring providing the clamping force to the work surface

  • Material Composition Copper Casting
  • Amperage Capacity 300
  • Jaw Opening Depth 4"
  • Applications Light Duty Metal Fabrication
  • Overall Length 8.5"
  • Type Of Cable Connection Ball-Point thru 3/0
  • Style Of Ground Device Clamp
  • Jaw Opening 1.5"
  • Process(es) SMAW, SAW, GMAW, FCAW, GTAW, and PAW

  • 4 Questions & 4 Answers
    Steve in CT
    from Connecticut asked:
    August 5, 2018
    Will this clamp work as a replacement to the Miller 252's ground clamp? Would the 500 amp clamp be a better choice?
    1 Answer
    Tweco Copper Ground Clamp - 300 Amp GC 300 would be more than sufficient for the Millermatic 252.
    Submitted by: Cyberweld on August 6, 2018

    from Allentown, PA asked:
    March 3, 2017
    Looking for a ground clamp for my Miller 211. I saw a comment that the 300 was too big for the ground that comes on the 211. I would like the somewhat bigger opening on this clamp. Do I have to change the ground cable also or does this really fit?
    1 Answer
    The GC 300 should fit on the ground cable that is on your Millermatic 211. If for any reason it does not, you are more than welcome to return it and we will cover your shipping cost back to us. We know that the GC 200 would definitely work- so that is an option as well. It has the same clamp opening as the GC 300 and is a 230 Amp clamp.
    Submitted by: Customer Service on March 15, 2017

    Ken Swerdlow
    from Tulare , California asked:
    June 30, 2016
    Can this clamp replace stock clamp with dynasty 210 Cps tig or do I need 200 amp version? Machine is 210 so ??
    1 Answer
    The Tweco Copper Ground Clamp - 300 Amp GC 300 can be used to replace the original ground clamp that came with your Dynasty 210
    Submitted by: Customer Service on June 30, 2016

    from USA asked:
    April 21, 2014
    Is this made in the USA?
    1 Answer
    The Tweco Copper Ground Clamp - 300 Amp GC 300 is now made in Mexico
    Submitted by: Customer Service on April 22, 2014

    12 Reviews
    92% (11)
    0% (0)
    0% (0)
    0% (0)
    8% (1)
    92% Recommend this product (11 of 12 responses)
    By Donald S.
    Harford County Maryland
    February 25, 2018
    Tweco Copper Ground Clamp - 300 Amp GC 300
    Excellent replacement for original clamp. Superior performance to original. Great price. Shipped overnight.
    By chris
    November 22, 2017
    great product very satisfied
    great product very satisfied
    By George
    July 11, 2017
    Tweco Copper Ground Clamp
    I'm satisfied with the quick delivery and my mig seems to like it fine too.
    By azjack
    Southern Arizona
    March 29, 2017
    Great Clamp, great service
    What's to say? It's a Tweco ground clamp. Couple of experienced welders recommended it to me over the stock clamp that came with my multi-process welder. Said it makes better contact and better ground. Seemed reasonable. Have ordered from Cyberweld before. What's not to like? Good prices, quick shipping. You click the button the brown truck shows up.
    By Silverfox
    October 7, 2016
    Great improvement over the original ground clamp. Very nice update.
    Easy to install. Good clamping pressure. Established superior grounding for welding over factory Miller clamp(s).
    By Mark
    Prairieville, Louisiana
    May 5, 2016
    Too big for my application
    Not the clamps fault but too big for the ground wire that comes with the Millermatic 211.
    By dan
    chi il.
    February 6, 2016
    much better than the clamp on my Lincoln mig welder clamps tite better ground very happy with purchase
    Prosbetter than cheaper factory clamp
    By Eric
    October 29, 2015
    Excellent grounding clamp!
    This clamp has been a major improvement over the stock Hobart Ironman clamp!
    By ChuckD
    October 23, 2014
    Good quality clamp
    I like this better than the clamp my welder came with. This is more stream lined and is thus easier to grab onto smaller object. The clamp power is good for hanging on tight to your work.
    Tip: I was able to unbolt the lead from my old clamp which used a large flat wire connector with hole in it for the bolt. By bending (rounding) this somewhat in the vise it was able to slip it right into the hole in this new clamp. So no cutting needed and it has a great connection that won't pull out if it gets tugged on.
    By Charles
    Houston Texas
    February 12, 2014
    Good quality,price, and delivery
    By Ken
    July 9, 2013
    Quality ground clamp
    I needed a good ground clamp for my Hobart MIG welder (they come with a cheap clamp) and after seeing Jody's recommendation on his web site, I sought one of these clamps. It is cast copper and has a strong spring. It was shipped quickly and packaged well. If you have a welder with a sub par clamp, a good clamp like this one will make a big difference in the welding process, especially with MIG welders.
    By Seth
    Waldoboro, ME
    June 3, 2013
    Exactly what I needed, and at a great price.
    Arrived fast and in perfect condition; the price was right... what's left to say?
    ProsCyberWeld does it again: the right product, the right price, and fast shipping. Who could ask for more?

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    Tweco Copper Ground Clamp - 300 Amp GC 300 detail
    Tweco Copper Ground Clamp - 300 Amp GC 300