Designed Specifically For Rough Cuts. Make Cuts Parallel To The Wood Grain. The 72, 73 And 75 Rd Are Equipped With A Special Raw-cutting Grinder To Obtain Planks And Planks From Large Trunks. To Be Used In Sawmills With Chain Systems. 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.