New Nicholson 01765 Black Diamond 3/16" X 8" Chainsaw File Round Smooth FILENICHOLSON MODEL 01765FACTORY SEALED NEWGREAT SALE PRICEWE WILL ALSO COMBINE SHIPPING AND SHIP EACH ADDITIONAL FILE FOR 1.00 SHIPPING.Straight tang. File from inside to outside of cutter. Place file against bevelled cutting surface of teeth 20 degrees to 45 degrees with saw. Sharpen all left hand cutters on one side of chain then move to the other side and file all the right hand cutters. Height between cutting teeth and depth gauge is between