Oregon 31187-E Plastic Grease Gun Type_Drive Sprocket and 410-120 Bench Grinders

and 410-120 Bench Grinders

Their oscillating plates eliminate the need to thread the rope and allow them to be installed very quickly

and other saws

Reference chart provides a quick link count for 1/4"

To do this

Oregon 31187-E Plastic Grease Gun Type_Drive Sprocket and 410-120 Bench GrindersOregon single use grease gun reduces friction and enhance performance in a variety of chainsaw applications. Manufactured from high quality plastic materials withstanding changes in temperature provides protection for bar against premature wear. Features self dispensing, one hand operation with transparent, visual control of fill level so you can see how much oil is left without opening the cap.