This Ryobi Expand-It Lower Attachment Shaft Trimmer Head & Guard NO8 is a great addition to your outdoor power equipment. It is compatible with the RY15527 model and is designed to make your trimming tasks easier and more efficient. The trimmer head is made from high-quality materials and is built to last. It comes in a sleek grey color and is easy to assemble, making it ready for use right out of the box. This product is perfect for those who are looking to upgrade their trimmer and achieve a more professional look in their outdoor projects.