Quick verdict
A 1 lb, 416 ft donut of round .080 inch Gatorline made from a fortified nylon co-polymer, sized for compact gas, corded and battery trimmers. It suits a homeowner who trims grass edges and seasonal weeds weekly and wants to stop buying small pre-wound spools. The caveat is that .080 round line is for light work; heavy weeds want a thicker or edged line.
Strengths
- 416 ft on one donut, many refills of a small spool
- Fortified co-polymer resists breakage at the eyelet
- Fits fixed-line, semi-automatic and bump-feed heads
- Round profile survives fences and pavers better than edged line
- Named fits include Stihl FS 45, DeWalt DCST920P1, Ryobi RY40220 and Greenworks 21362
Weaknesses
- Light .080 line is for grass and seasonal weeds, not brush
- Round profile does not cut as cleanly as square or star line
- You wind the spool yourself
- Not every .065 trimmer head accepts .080 line
The overall YardToolLab Score is out of 100. Section scores are out of 10.
Who this line is for
Most homeowner trimmers, and nearly every battery and corded one, are built for light line, and .080 inch is the size that fits the widest spread of them. Oregon’s Gatorline round .080 comes as a 1 lb donut holding 416 feet, enough to refill a small spool many times over, and it is aimed at the person who trims grass edges and seasonal weeds weekly and is tired of buying tiny pre-wound spools. If the yard is lawn, beds and a fence line rather than a brush lot, this is the right size and the right format.
This review is based on the maker’s published specifications and on recurring owner feedback. We have not run this product ourselves.
What you get
One 416 foot donut of round .080 inch line, part number 21-380B, weighing 1 lb. Oregon describes the material as a fortified nylon co-polymer and says it is more durable and more impact resistant than standard trimmer line. The listing names fit on fixed-line, semi-automatic and automatic bump-feed heads, on gas, electric and battery trimmers with curved or straight shafts, and calls out specific models: Stihl FS 45 and FS 40 C, DeWalt DCST920P1 and DCST970X1, Ryobi RY40220 and Greenworks 21362. The list is not exhaustive, but it tells you the intended class: compact homeowner machines.
Cutting performance
Round line is the generalist profile. It does not slice as cleanly as a square or star line, but it survives contact with fences, pavers and tree bark better because there are no corners to chip. At .080 inch, Oregon pitches this line at grass and seasonal weeds rather than brush, and that is honest. Owners of Gatorline in this size describe clean edging along walks and tidy work around posts, with the usual slowdown in thick, stemmy weeds where a heavier line or a blade belongs. On a battery trimmer the lighter line also helps runtime, since the motor is swinging less mass.
Cutting life
The fortified co-polymer is the point of paying for a brand name donut over a bargain one. Standard nylon line goes brittle in storage and snaps at the eyelet; Oregon’s claim is that this blend resists breakage and impact, and the recurring owner note is fewer short breaks when the line clips a hard edge. Line still wears faster on concrete than on grass, so expect more bumps on a long driveway edge. Keep the donut out of the sun and dry; a spool that has sat in a hot shed can be revived by soaking overnight in water, a trick that works on any nylon line.
Fit and compatibility
Check the diameter your head accepts before you buy. Trimmers rated for .065 line can often take .080, but not always, and the manual is the authority. Heads rated for .095 will take .080 at a small cost in cutting bite. Winding a bump head from a donut is a two minute job once you have done it twice: cut the length the head calls for, wind both halves in the direction of the arrows, keep the wraps flat and leave the tails in the slots. Fixed-line heads just take precut lengths.
Living with it
A 416 foot donut is a season or more for a small yard. Store it in a sealed bag, cut lengths with snips rather than tearing, and keep a few precut lengths in the shed so a mid-job refill does not turn into a search. Oregon does not state a warranty for consumable line on this page, which is normal for the category.
Alternatives to Consider
Oregon’s own Magnum Gatorline square .095 is the step up for heavier weeds if your trimmer head accepts it. Husqvarna Titanium Force .080 is a round line with a slick coating that some owners find feeds more smoothly in automatic heads. For a trimmer that only ever takes pre-wound spools, the maker’s own replacement spools remain the path of least resistance, at a higher price per foot.
Verdict
Buy the Oregon Gatorline .080 round donut if you own a compact gas, corded or battery trimmer that accepts .080 line, trim grass and light weeds weekly, and want a long-lasting brand line at bulk pricing. Skip it if your trimmer is rated for .065 only, if you need an edged profile for heavy weeds, or if you will not wind a spool yourself.
Full specifications
Oregon Gatorline 0.080 in. Round String Trimmer Line, 1 lb. 416 ft. Bulk Donut (21-380B) FAQs
Often, but not always. Many compact heads accept .080 with no trouble, while some automatic feed spools jam on anything heavier than .065. The manual for your trimmer is the authority; forcing heavier line costs head speed and strains a small motor.
Oregon does not state a count because it depends on the head. A typical small bump head takes somewhere between 10 and 20 feet per load, so a 416 ft donut is dozens of refills and a season or more for a small yard.
Yes. Oregon names the DeWalt DCST920P1 and DCST970X1, the Ryobi RY40220 and the Greenworks 21362 among compatible models, and light .080 line also helps battery runtime because the motor swings less mass.
Dry, brittle nylon is the usual cause. Store the donut out of the sun, and soak a spool that has sat in a hot shed overnight in water before loading. The co-polymer blend in Gatorline is meant to resist this better than standard line.
