The Duoline Plus trimmer line from Oregon is a super efficient, high performance & quiet to use trimmer line suitable for use with a wide range of trimmers from various manufacturers. Highly resistant to abrasion, breakage & welding like all other Oregon lines, the Duoline plus is durable & tough & manufactured in a helicoidal shape for greater cutting & efficiency. In fact, this line is so efficient, it doesnt only operate at an impressively quiet level & produce brilliant cuts, it looks after your trimmer motor too, protecting it from over revving & burnout.