CONVENIENT AND FAST SHARPENING:The schainsaw sharpener is designed to allow you to sharpen the chain saw more conveniently and quickly.Therefore, we designed the chain saw sharpener to be a hand crank type.It can be used without connecting to a power source. You only need to shake the sharpener to make your chainsaw sharp in a few seconds. PORTABLE CHAIN SAW SHARPENER:Many scenes where we use chain saws are in the field. If you carry an electric sharpener, it will increase the burden, and there is even no power supply to use.This chain saw sharpener is designed to be portable,it is light in weight, simple in structure, and very convenient to use outdoors. DURABLEThe hand crank chainsaw chain sharpening jig is made of high-quality alloy material, which is wear-resistant and durable, and has a stable grip.The working part of the chain saw sharpener can be maintained with lubricating oil to extendthe service life of the device. Work More Efficiently: With this hand-cranked chain sharpener, you can sharpen the sprocket teeth of a blunt chain saw quickly and easily, and provide the best sharpening angle for the chain saw guide. It can precisely sharpen the chain of a chain saw, make the chain sharper, work more efficiently, and make gardening work smoother.