Replacement for Echo Part Numbers: 

For ECHO Chainsaw Models:  CS-395SP, CS-440, CS-3600, CS-3700, CS-3700ES, CS-3900, CS-4000, CS-4000P, 

1 x Brand New Best Quality Aftermarket Replacement Clutch Drum Spur Sprocket with Bearing, 

CHAIN PITCH .325",
NO OF SPUR TEETH = 7,

This spur type can be used to replace the rim type, 

FREE DELIVERY WITHIN THE UK !