"The Ideal Chain For Woodcutter Professionals Who Use 3/8" Saws. "The Square-angle Cutting Edges And Reduced Vibration Offer Optimal Performance. The Curved Depth Delimiters Prevent The Cutting Edges From Cutting The Side Walls Of The Cut Sections, Ensuring Greater Precision. & Benefits • Lubritec ™ Keeps Your Chains And Guide Bars Oiled, Ensuring Less Friction And Longer Life • Blue Teeth Offer Maximum Protection Against Corrosion • The Baton On The Upper Edge Of The Cutting Edge Makes Precision Grinding Easier Our Exclusive OCS-01 Steel Offers More Durability. "