Service part / kit · KP1696-1 Drive Roll Kit - Includes: 2 V groove drive rolls and inner wire guide for Steel Wires. (Used on LN-25 Pro) Drive Roll and Guide Tube Kit For .068-.072 in. (1.7-1.8 mm) cored or solid steel wire. · qty 1 — part number K126-12. Used by the engines and generator sets below.