The STIHL 48517136705 Rollomatic E guide bar is a genuine OEM component designed for professional STIHL chainsaws. This robust guide bar measures 500 mm (20 inches) in cutting length, features a 1.6 mm (0.063 inch) gauge, and a .325 inch pitch. It requires 81 drive links for optimal performance. The Rollomatic E design is known for its durability and reduced kickback, making it suitable for demanding cutting tasks in forestry and arboriculture. This guide bar ensures precise and efficient cutting when paired with compatible STIHL chainsaw models.