Flux-Cored or Gasless MIG Wire Drive Rolls - Knurled or serrated 

Serrated wire drive rolls designed for moving soft flux cored wire for MIG welding generally when outside and the shielding gas will be less ineffective.

Knurled rollers for 0.8mm and 0.9mm. 

The pressure on the MIG wire drive roller(s) is (are) reduced so as not to crush the wire which would result in feeding problems and could cause flux to be lost from the oute wire case.  The Serrated drive roll allows much less drive roll pressure to be used but still effectively transport the wire through the MIG torch to enable welding.
30mm Dia. 
10mm Wide

Portable inverter MIG knurled roller for gasless wire

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