I HAVE A USED ECHO FLEX DRIVE CABLE OFF A SRM-1500 PART NUMBER IS 61001351030. IT WILL FIT MODELS LISTED BELOW AND ITS IN WORKING CONDITION AND IS ITEM # 87

Echo

SRM-1500 Straight Shaft Trimmer / Brushcutter

SRM-1500A Straight Shaft Trimmer / Brushcutter

SRM-1501 (0017001 - 0039000) Straight Shaft Trimmer / Brushcutter

SRM-1501 (0039001 - 0083386) Straight Shaft Trimmer / Brushcutter

SRM-200CE Straight Shaft Trimmer /