Buckbock Trimmer Head for Echo SRM-266 SRM-266S SRM-266T 266U 99944200903 Speed Feed 450

I like this trimmer head. So much easier to reload more line. I am using .105 line , does a very good job. Makes trimming a little easier because this trimmer head works so well. Does not come with any screws to attach to gear box. Use screw from old trimmer head to attach. I would purchase again.

Quick delivery, but the clips are alittle difficult to press in if you have to take apart, to clean out the inner workings or to work on. Although that could prove to be a good thing. cause I’ve had a lot of issues with the name brand ones flying apart during use and loosing parts. Which can cause a lot of down time and aggravation. All and all a good head for the money.

Don’t waste your money! I have a third of an acre lot with a house I. The middle. Nothing huge and yard is all grass, not a hay field. I got three of these to save time. My first use took 1 & one half of these heads to finish. The second also broke apart on the top piece over the line. On my second use the third one ran out. They appear to only have a very short length of line on each spool. So spend the extra couple bucks to get a better quality part. I probably missed some small print that warns each spool only has 3 feet of line but anyway. And yes I actually stopped my yard work to share my feelings on this item!

Occasionally the trimmer line on most heads will not feed properly and breaks off making it necessary to open the head to retrieve the line and start it feeding again. This trimmer head was impossible to open. The plastic tabs that you would depress to open the head to retrieve the line wouldn't budge. The head became garbage halfway through the first use.

Fair product... not oem

The head is a terrific upgrade to my OEM string trimmer head. I was concerned if it would fit my straight shaft trimmer which has a 10mm-1.25pitch. No adapters were included but the thread size was a perfect match.

Very durable trimmer head, easy to load trimmer string.

Material is strong and durable, but the tabs that hold the spool in are to rigid. Online video shows a guy push the tabs with his fingers. This is not possible with a brand new unit. One of them cracked during install. Glue only held it for 30minutes of use. The whole thing fell apart so my loss.