Miller Drive Roll Kit - V Groove 4 Roll Genuine Miller V-Groove 4 roll drive roll kit for your Millermatic 300/350/350P with Meters, 54 Series, 24A and R-115 Miller wire feeders using a standard four roll drive system. V-Groove drive rolls are ideal for feeding solid steel and stainless steel MIG wires. Each kit comes complete with 4 drive rolls and inlet wire guide and roll guide.