"an Ideal Chain For The Professional Woodcutter Who Uses .255" Caliber Chainsaws. Full Chisel Teeth And Reduced Vibrations Offer Optimum Performance. Features & Benefits • Lubritec ™ Keeps Your Chains And Guide Bars Oiled, Ensuring Less Friction And Greater Durability • Blue Teeth Offer Maximum Corrosion Protection • Top-plate Wire Indicators Allow Sharpening With Precision And Ease • Our Exclusive Ocs-01 Steel Offers Improved Durability "