Suitable for use with most counterclockwise turning trimmers up to 25cc this aluminium jet fit trimmer head from oregon is very easy to load and even easier to fit supplied with a range of adaptors allowing this unit to be fitted directly to the trimmer39s blade bolt pre loaded with oregon39s high performance flexiblade line this jet fit head is ready to go straight out of the box however it can be loaded and with all varieties trimmer line to suit the needs of the user and the job i