These Lightweight, Completely Redesigned Professional Guide Bars Are Lighter, Stronger And Last Longer. Designed For The Highest Performance By Professional Woodcutters. 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 Guide Wear Rate And More Precise Cut Thanks To Better Chain Mounting. The Pair Of Speedcut Guide Bars Together With The Speedcut Chain To Create The New Generation Narrow Cut System On Chainsaws Up To 55 Cc Displacement. Speedcut Is Designed To Provide Faster Cuts And Has A Lower Weight Than Standard Cut Systems. The Controlcut Guide Bars Are Standard Shear Bars That Have A Narrow Radius Tip For Reduced Recoil. Recommended Size Chainsaw 2.3 - 4.0 Cu. In (38 - 65 Cc) And Major