Replacement guide bar and semichisel chain set designed as a direct replacement for model 91PXL055G. Sized for 16 inch cutting length with 55 drive links, this set restores proper fit and cutting performance for compatible chainsaws, including Stihl MS 170. Key benefits Restores cutting capability: Replaces worn bar and chain to recover cutting consistency and runtime. Right fit for your saw: 16 inch length and 55 drive links match machines that require those specifications, ensuring correct tension and engagement. Semichisel chain performance: Tooth profile balances cutting efficiency and durability for general purpose cutting tasks. Simplifies maintenance: Replacing both bar and chain at once reduces installation steps and returns the saw to a ready state. What it does Guide bar: Provides a straight, stable track for the chain to run on, maintaining alignment and feed. Semichisel chain: Designed for reliable cutting in a variety of wood conditions, offering easier edge maintenance than full chisel designs. Compatibility and specifications Model reference: 91PXL055G Cutting length: 16 inch Drive links: 55DL Compatibility: Intended for use with equipment that accepts a 16 inch bar and 55 drive link chain, including Stihl MS 170 Practical applications Yard maintenance: Trim medium branches and limbs to keep trees and shrubs under control. Firewood preparation: Cut small to medium logs into splitsize sections for home use. Property cleanup: Clear fallen branches and brush after storms or seasonal pruning. Installation and use tips Verify your chainsaw requires a 16 inch bar and 55 drive links before ordering. Follow your chainsaw manual for proper installation, tensioning, and lubrication. Regularly inspect the chain for wear and keep it sharpened to maintain cutting performance. This replacement bar and semichisel chain set provides the correct size and tooth profile needed to restore normal operation for compatible 16 inch chainsaws, helping you complete routine cutting tasks reliably.