Features: -*This trimmer head is for a bump-feed trimmer head only.Suits all line sizes. * It is suitable for making a low grass so that the grass grows more neatly.Vibration free operation. * Economic benefits high cost comparison .This head will fit any straight shaft machine with a reverse thread nut on the end. * brand new and high quality *Aluminum alloy material and not easy to rust will not hurt branches *For models: general type of mower *Material: Aluminum Alloy *Color:Silver(As Pictures Show) Package include: 1x Trimmer head Notes: 1.Manual measuring please allow 1 ~ 5 mm error thank you. 2.Due to the difference between different monitors the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.Please understand thank you!