Sprocket with toothed ring for ECHO chainsaw A : 16,7 mm B : 12,7 mm C : 78,6 mm D : 16,7 mm Pitch: 3/8 Teeth: 8 Compatible with chainsaw models: 162 - 268 - 272 - 288 - 66 - RANCHER 61 266 - 268 - 272 - PRACTICA 61 Code: 370069