Oregon 610727 SpeedCut Nano Spur Sprocket, Superseded by 610727N Bar Mount_T133 That means

That means

the diameter relationship between the standing line and prusik loop diameter should follow the 60-80% ratio

The low-vibration

It can also be locked in open position by using the pin provided

Lightweight polypropylene HD external shell with exponential better performance

Oregon 610727 SpeedCut Nano Spur Sprocket, Superseded by 610727N Bar Mount_T133 That meansThis 7 tooth, . 325" Low Profile Pro Spur Sprocket delivers superior performance and value for professional chain saw users who is converting to the SpeedCut Nano Cutting System. The sprocket is rugged and dependable with excellent wear resistance. Superseded by: Oregon 610727N