This handy kit comes with everything you need to professionally maintain your saw chain. Kit includes 1 Swiss made round file with file frame, 1 Swiss made depth gauge raker file, 1 .025" drop center depth gauge tool and 2 wooden file handles. File frame has multiple guides to help align your file to the proper angle and depth. 4.5mm kit fits lower profile .325 pitch saw chains in the 33, 34, and 35 series and 90SG.