DOP60-420 Murray / Noma Throttle Control. Plastic conduit, fits most Murray walk behind mowers, converts from positive to negative action - 1985 to present, use with # DOP04-304 mounting adapter. Size: Conduit Size: 3/16", Conduit Length: 50" , Innerwire: 53-1/2", Wire Travel: 1-5/8". Replaces # 420005.