Features: The sharpening head of the electric saw sharpener is easy installation and have good heat dissipation. It can used to the polishing agent without removing the chain, thereby improvings work efficiency. Coated with diamond, which have good polishing effect, uniform and delicate carvings, hard texture, the materials is rusts and wear resistant,light weight, not easy to break, deform and bend. The chain saw sharpener is easy installation and can be replaced in 2steps; You can apply polishing without removing the chain, which saves time and effort and improves work efficiency. These stones leave excellent cutting on saw chain and easily replaced on most electric chain sharpeners Carded. These grinding head for electric saw sharpeners suitable for metal polishing, such as electric saw, wood, molds, steel, etc. Specifications: Material:Diamond Package Includes: 3Pcs Chainsaws Sharpener Bits note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.