These Nu-Tec® guns are a BIG improvement over the original AMH® Ultra Mig, Controlled Systems®, MAC Tools® UltraMig or Marquette® guns supplied with these systems. The synergic control potentiometer knob has been moved inside the top spine of the handle! This allows easy thumb-wheel adjustment for both right or left handed users and prevents costly repair or replacements of the mig guns due to control knobs breaking off!! These guns are compatable with all OEM replacement parts and are available in 180 amp and 260 amp direct-connect versions. 10 ft. standard length, additional lengths available Synergic Mig Gun NM15A Style (180 Amps)Synergic Mig Gun NM15A Style with thumb-wheel speed control, 10 ft. power cable. Direct-connect AMH® 135/175, MAC Tools® 135/175 & Marquette® systems. Elsewhere: $ 225.00 Welding Direct Price: Synergic Mig Gun NM26 Style (300 Amp)Direct replacement synergic Mig gun with thumb-wheel voltage control for AMH® Ultra Mig 200 & 260, MAC Tools® MW200, Marquette® M15190 systems. Elsewhere: $ 350.27 Welding Direct Price: Additional discounts may be available for volume orders. To speak with a customer service representative for details, call, toll free, 1-866-568-3170 . Welding-Direct.com is in no way affiliated with the above named manufacturers. References to named machines, torches, welding guns and numbers is for your convenience only. Most parts advertised for sale are made by or for Welding-Direct.com; other parts, as indicated, are original parts (OEM) and are simply being resold by welding-direct.com. Copyright 2004 Welding-Direct.com. All rights reserved. Details on our Free Delivery policy may be found on our Information page.