Oregon Jet Fit 4 Line Easy Load Aluminium Universal Strimmer Head, Trimmer Head for Grass, Weeds & Thick Vegetation, with FlexiBlade 4.0mm Trimmer Line, Fits Most Straight Shaft Strimmers Over 40cc

These are far better than a bump feet easy to use and the line does not keep breaking

having the 4 strands allows cutting of overgrowth in a single pass, the strands last more than three times as long than using a 2 stranded head in my experience, and you don't have to give extra revs to cut thicker weeds. Saves on time, fuel and strands. a big win. great product.

Only used this once for my Ryobi 52cc and it works great. the black plastic cap locates in a rather slack fashion compared to the rest of the unit but other than that appears to be well made. However that's not really that important what does matter is that this allows you to attach the heavier duty wire to the unit which is just phenomenal and has transformed my old brush cutter. now in all honesty its time that's more important to me than cost and this unit really helps reduce the amount of time I have to use the unit whilst at the same time leaving a much better finish as well. I managed my whole garden which is fairly large and the land around the outside of my house as well on one set of wires through some fairly rough stuff including a little brambles and some prickly bush that I don't know the name of but has always defeated normal strimmer wire so very impressed so far. currently using 4mm wire might try the tech stuff next time just to give it a go

I love these heads on my big forestry saw/brush cutter. The line is very durable, and unless cutting against stone or metal lasts forever. It is a quick job to fit new lines, I have a mini set of pliers to pull the stub of old line out.

Absolutely love it!No more changing lines constantly. I have used just the 4 lines to cut over 2 acres of grass without changing them.It takes about 20 seconds to change all 4 lines with no need of opening or to use any type of tool (Just make sure to leave about 3/4 of an inch or 2 cm out from the other side so you can pull it out easily).Can cut almost everything but, be careful with your own plants/trees if they are small. This can chop most of the things.Very strong and amazing tool.Each line takes a long time but, of course, if that hits constantly sharpen hedge stones or metal it will break sooner or later but other than that, just excellent product.

Universal fit very easy to use and cut really well. The line is in 25cm lengths you get 8 lengths with head and they just push in and lock no messing about with taking heads apart. You can use 2 or 4 lines on the head and it cut through most undergrowth fast well reccomend.

Was really looking forward to using these and it being Oregon of which i have bought many products thought this would have been well made unfortunately it was a real let down 3 piece of line would stay in OK but 1 would just keep flying out same hole so contacted Amazon who were very good and sent a replacement but still had same issue also the replacement the moulding was poor and head was rough and sharp in places can't recommend this real same had to return for Refund

Some reviewers have noticed that the blades can fly out from the sides. This has happened twice to me, but maybe I did not tighten enough. Checked by pulling them taut and they seemed locked, but we shall see. The black plastic dome has stayed on so far, it has a definite locking mechanism. Due to very heavy bramble, I have ordered the Red 539174 (40 pieces = 40x26cmx7mm) to see if they will cope with the much thicker undergrowth. It's quite easy to switch between the various grades of line. Definately a better solution than the bump feed type setup in my opinion. Will revisit and up to 5 star if the prolonged use and longevity of this product holds up. I can't honestly say I'm impressed with the locking of the plastic blades just yet.+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++UPDATE at 21st October 2017The Oregon is still working, but the heavy duty Red 539174, just don't stand up to really serious work. Maybe weed and undergrowth, but brambles seem to strip the 'bobbles' off the line, so needing fairly constant attention and replacement. Could be that I'm expecting too much, but they don't replace my one piece plastic or metal blades. For lighter to medium duty, the machine and line is ok.