Makita D-72154 4mm Chain Blade Sharpening Set In Roll Up Pouch Chain blade sharpening set in a water resistant, compact roll up pouch. CONTENTS  3x 4.5mm Round File  2x Holder Handles 1x Depth Gauge 1x Flat File 1x Filing Guide 1x Roll-Up Pouch FEATURES Chain saw sharpening kit with water & grease resistant rollup bag Angle markings on file holder for easier and more accurate sharpening angle Resin type handle Flat file with handle for use with or without depth gauge Ergonomic grip handle 2 Additional round files File holder (guide bar) with handle and angled markings so you can align with chainsaw chain