These Lightweight, Completely Redesigned Professional Guide Bars Are Lighter, Stronger And Longer Lasting. Designed For The Highest Performance By Professional Woodcutters. - The Pair Of Speedcut Guide Bars Together With The Speedcut Chain To Create The New Generation Narrow-cut System On 55 Cc Displacement Chainsaw. Speedcut Is Designed To Provide Faster Cuts And Has A Lower Weight Than Standard Cut Systems. - Features And Benefits • More Precise Cutting From A Stiffer Bar • Provides Better Balance On Smaller Saws • Lower Weight Translates Into Less Effort • Longer Life Thanks To A Stronger Guide • Longer Tip Life And Better Performance With A New Sprocket Tip System • Reduced Driving Wear And A More Precise Cut Thanks To A Better Assembly Of The Chain. - Recommended Size Chainsaw 2.3 - 4.0 Cu. In (38 - 65 Cc) And Major