This is a high-quality Oregon 18" guide bar that is compatible with STIHL chainsaws. It has a 3/8P pitch, 0.050 gauge, and 66 drive links. The bar is made from aluminum and steel materials and comes in a multicolor finish. It is perfect for those who need a replacement bar or want to upgrade their chainsaw. The product includes one guide bar and is an excellent choice for those who require a reliable and durable chainsaw bar.