Specially Designed For Rough Cuts. Makes Cuts Parallel To The Grain Of The Wood. The 72, 73 And 75 Rd Are Equipped With A Special Raw Shear Cutter To Obtain Boards And Planks From Large Trunks. To Be Used In Sawmills Equipped With Chain System. Manual Use Not Recommended. Features & Benefits • Lubritec ™ Keeps Your Chains And Guide Bars Oiled, Ensuring Less Friction And Longer Life • Our Exclusive Ocs-01 Steel Offers More Durability.