STIHL Trimmer Line
Using the right line can save you time and money

The type of trimmer line you choose can greatly impact your cutting performance. That's why STIHL manufactures six models of trimmer line - bringing together quality materials and manufacturing for superior cutting. Why six models? Because not all cutting jobs are the same - we make different diameters and shapes of cutting line to accommodate the wide range of cutting scenarios you might find in your landscape.


The diameter of your trimmer line will impact both its cutting precision and durability. Not all diameters are approved for all STIHL trimmers - please refer to your instruction manual to see what diameters of trimmer line are approved for your model of STIHL trimmer.


The shape of your trimmer line will impact how your trimmer cuts through weeds, as well as its durability. Round trimmer line is the most common shape. Round line cuts well and holds up well against abrasion. It is also easier to spool and feed through a trimmer head. Non-round trimmer line comes in a variety of shapes. These shapes have hard edges that slice through vegetation cleaner than round trimmer line (which can "tear" weeds after it begins to fray). These hard edges, however, make the trimmer line less flexible, which can reduce its durability against abrasion.

STIHL Trimmer Line

There's high-performance STIHL trimmer line for every operating condition. STIHL manufactures trimmer line using a custom blend of polymers to produce a line with the best all-around characteristics of abrasion resistance, flexibility over time and temperature ranges, and welding resistance. Here are the models we offer:

Premium Round Line

This high-performance trimmer line is manufactured to fit all STIHL trimmer heads. It is available in .065, .080, .095, .105 and .130 diameters and is specially formulated to prevent fraying and welding. It's an excellent "multi-purpose" line, designed to hold up under a wide range of cutting conditions. We can help you choose the diameter that's right for your trimming needs.

Quiet Line™

STIHL Quiet Line™ incorporates spiral grooves that greatly reduce wind noise. This trimmer line is primarily used with electric and battery-powered line trimmers, which operate much quieter than gasoline-powered models. Use this trimmer line when working in properties with noise restrictions.

Commercial Round Line

Heavy-duty work calls for a heavy-duty line, and the STIHL commercial line meets the demands of the job and is specially formulated to help prevent fraying and welding. It delivers fast, efficient cuts time after time. It's also durable, so professionals spend more time trimming and less time spooling.

Commercial Square Line

The edges of our square trimmer line allow it to cleanly slice through grass and heavy weeds. This line is great for professionals who have to tackle dense weeds on a daily basis.

Pentagon Line

Our Pentagon Line combines the hard edges of square line with the abrasion durability and easy re-spooling of round line. The end result is great cutting performance in heavy weeds that holds up in tough conditions.


Stubborn weeds are no match for a STIHL trimmer with X-shaped trimmer line. Designed for resistant vegetation, X-Line features a unique shape that grabs hold of grass and weeds and cuts them clean. X-Line is also flexible over time and resistant to welding and high temperatures. Great for homeowners and professionals alike.