Inner diameter: 16mm3. When starting to use, polish a little less material, otherwise it will easily.5. of application: For all types of soft and hard timbers. Can be used for woodworking, wood carving, root carving, polishing tea trays, coffee tables, etc.1. Angle Grinder attachment: A high performance wood carving tool, angle Grinder attachment. Suitable for angle grinders, hand grinders, etc.Outer diameter: 90mm4. Easy to operate: Easy to use and easy to operate, allowing removal of small or large of material.Compatible with: For 16mm Aperture Angle Grinderof application: Timber Digging, Timber Leveling, ect.4. Fix the polished wood and yourself (such as gloves and goggles)2. Keep your hands tight when you are working, don't distract yourself, be sure to turn off the power when you stop working.2. Durable: from hard tungsten steel for durability.Uses: sanding the plane, grinding the arc1 x Twelve-tooth cutterMaterial:Tungsten steel alloyColor: Black3. 12 Teeth: Give a smooth and controllable cutting and carving action to maximize the cutting performance .1. Choose a high-quality angle grinder, preferably with a handle, do not the protective cover