Arc Gun Chuck Adaptor - 1/2-20

Fits most Arc Guns with 1/2-20 thread including Erico, Image, Black Proweld Guns and Midwest Fasteners

Image/Proweld/Truweld: 033-505, 033 505

Nelson: 751-004-029, 751 004 027 (This chuck adaptor does not have the flanged base like the Nelson version, but works equally as well on the NS20 guns)