The Lincoln KP653 drive rolls can be used for solid or flux cored wire depending on which rolls you choose. V-groove rolls are used for solid wire and V-knurled rolls are used for flux cored wires. The solid wire drive rolls come with 1 roll, inlet guide, and retainer clip. The flux cored rolls come with 2 rolls and an inlet guide. Please choose your desired style and diameter from the drop-down box.