Specification Brand : INTBUYING BulletPoint1 : SpoolRunner 100 with 9.8ft (3 m) cable lead, rugged plastic shell, threaded nozzle, enclosed wire spool compartment. BulletPoint2 : This Aluminum Spool Gun is with internal spool hub tension adjustment for 4 in (102 mm) rolls of wire, extra contact tips, feed rolls for0.8mmaluminum, steel and stainless wires, and owners manual. BulletPoint3 : Aluminum Spool Gun Fit Miller can be used for a variety of applications including aluminum fabrication, trailer fabrication, sign manufacturing, auto and marine repair. BulletPoint4 : Our interface No. 3 is positive, and No. 4 is negative. If your Welder is the opposite with this, or if it roll backwards after installation, please cut and exchange the wires corresponding to No. 3 and No. 4. BulletPoint5 : Keeps wire clean, allows easy visibility of wire supply and it can be used for a variety of applications including aluminum fabrication, trailer fabrication, sign manufacturing, auto and marine repair. Color : Black ExternallyAssignedProductIdentifier1 : 0738629463684 ExternallyAssignedProductIdentifier2 : 738629463684 ItemName : INTBUYING Aluminum Spool Gun for MillerMatic 140 180 211 Spoolmate 100 Welder with 9.8ft(3m) Cable Lead and 10pcs Conductive Nozzle ItemPackageDimensions_Height : 5.6 inches ItemPackageDimensions_Length : 19.5 inches ItemPackageDimensions_Width : 15.5 inches ItemPackageQuantity : 1 ItemTypeKeyword : mig-welding-equipment Manufacturer : INTBUYING Material : Stainless Steel PartNumber : T022045 ProductDescription : This the spool gun is roll backwards, please check the following: This Spool Gun is no problem, but different welder with different connect way. You need to Remove the screws then find the wires with number, you should change the NO.3 to connect the NO.4. And then change the NO.4 connect the NO.3.Then the problem is solved. Item Included:(022045) 1set MIG Spool Gun with 9.8ft (3 m) Cable 10pcs 0.8mm Conductive nozzle