It is very easy to install, however does not last very long.

I have a Black and Decker 20 volt cordless string trimmer that I really like for its light weight and adjustability. I thought I would save $$ buying generic spools of trimmer line. What I found was: a) the OEM line lasts a long time. It took several months for me to use up the line on the first spool supplied with the machine. b) when I installed the first cheap replacement spool, now past its return date because the original lasts so long, the string cuts grass just as well, but the line does not advance. I thought perhaps I have one defective spool. The second one does not advance either. So I bought the Black and Decker pre-loaded trimmer line; it arrived the next day and it works great. One package will probably last me a year. Don't waste your money on the cheap stuff.

Be sure use at least a 255 degree C for extrusion. Looking for bigger reels of this in clear and black. ;)

Makes it easier to install new line. Very good price.

I've been using this brand for a year now and the product has been good. Only getting the three pack, which last me a year because my yard is full of ivy and weeds. Only having issues with one spool, which seemed to have issues at the manufacturing end. That spool was raps strangely and seem to have some type of glue on it, which had the tread stuck together. However, I was able to get it unstuck and just rewrapped it about the spool because it was the last one in the pack from last July. Overall this product is easy to use, as well as the 3-in-2 mower from Black + Decker that I bought this for.