STIHL Guide Bar Grease Gun is specially designed for lubricating the sprocket nose bearings on guide bars that feature a grease hole. While current STIHL guide bars maintenance- sprocket noses, some competitor's guide bars may still require additional grease. This tool provides targeted and efficient lubrication, ensuring optimal performance and longevity for compatible STIHL chainsaws. It is important to verify compatibility with your specific chainsaw model by visiting your local STIHL er. Keep your guide bar’s sprocket nose bearings properly maintained with the STIHL Guide Bar Grease Gun, promoting smooth operation and extended durability. Model Number: 1108 890 2580