2 IN 1 PORTABLE EASY FILE CHAINSAW SHARPENER .352" Pitch  3/16" , 4.8mm. 

STANDARD 3/16" ROUND FILES WORK WITH THIS GUIDE

Compatible with Stihl 5605 750 4304 and Fits PFERD 17301

3/16" FILES ARE USED TO SHARPEN .325" PITCH CHAINSAW CHAIN

This Guide IS EASY TO USE ENSURES YOU THE CORRECT ANGLES EVERY TIME MAKING HAND SHARPENING GENTLER THAN MACHINE SHARPENING AND CAN PROLONG THE LIFE OF THE SAW CHAIN