Drive Roll Kit, Type Drive Roll Kit, Compatible with Brand Miller, Number of Drive Rolls 4, Maximum Wire Diameter 0.063 in, Drive Roll Type V-Knurl, For Wire Type Flux-Cored, For Welder Series Millermatic 300, Millermatic 350, Millermatic 350P, For Welder Model 903773, 907028, 907300, 907474, For Wire Feeder Model 301499, 301499001, 951779, 951780, For Wire Feeder Series 20 Series, 24A, 54 Series, R-115, Welding Processes Flux-Cored Welding (FCAW), Application MIG Welding