Material: the particles on the drill bit are polished finely and evenly, hard and not easy to wear, anti-rust, wear resistance, high hardness, these are specially designed for chainsaws and steel, with long service life. Easy to Install: The is easy to install, It can be changed in just two steps, these drill bits are specially designed for electric chain saw, which is harder and more wear-, so you don't have to change it often. Chainsaw Sharpener Kit: You get 18Pcs in 3 size 5/32inch, 3/16inch, 7/32inch, 18pcs each size, which can meet your daily use and replacement needs. Wide Application: There are three sizes in our set, which are suitable for different sizes. which are suitable for chain saws of different sizes. can also be used for mold making and metal polishing. Strong Effect: This is a powerful sharpening tool with high hardness chainsaw, the troublesome hand mill, so you can finish grinding things as fast as., Manufacturer: Jnchdghwa