Anti-vibration mount for brushcutters, hedge trimmers and blowers, EFCO compatible Length (mm): 18 Outer diameter (mm): 16 Inner diameter (mm): 5 For models: EFCO 125 , 136 , 136 S 137 , 140 , 141 S 141 SP , 147 152 , 156 , 156 , 162 165 HD , MT 350 MT 440 , MT 2600 , MT 3500 MT 3700 , MT 4000 MT 4100 S , MT 4100 SP , MT 4400 MT 5200 , MT 6500 , TT 163 Part No.: 40271583 Original part No.: 50010061R EFCO MPM NS