Sprocket complete with roller cage for various ECHO chainsaw models A : 14 mm B : 10.6 mm C : 70 mm D : 13.2 mm Pitch : 325 Teeth : 7 Compatible with chainsaw models: CS400 - CS440 - CS3600 - CS3900 - CS4010 - CS4510 - CS4600 - 400EVL Article No. 360023