Chain sharpening kit 1)Chain sharpening kit with 6" flat file 2)4.0mm, 4.8mm, 5. ... 3)CE/GS/SGS/ISO9001 chain saw sharpening kit1) This kit includes sharpening tools and 6" flat file and is cloth ... . The product line includes guide bar, saw chain, sprocket, rim, wrench, chain breaker, rivet spinner, and saw file, trimmer line and ...