Features: Adopt hard tungsten steel forging, cutting blade, efficient cutting efficiency, durable, wear-resistant, easy to install and use. Easy to use and operate, allowing the removal of small or large amounts of material. High‑performance woodcarving tools, angle grinder accessories, suitable for angle grinders, hand grinders, etc. The flat shape and the curved shape have different functions and provide you with multiple choices. Inner diameter: 16mm; outer diameter: 90mm; compatible with 16mm aperture angle grinder