Specification Brand : iayokocc BulletPoint1 : 【Material】Made of heat-treated carbon steel, the service life is 10 times that of high-speed steel. BulletPoint2 : 【Design】The head of the rotary file is spherical, the teeth of the file are medium teeth, and the size is moderate. BulletPoint3 : 【Function】A very rough coating can quickly re-move the blank while maintaining a relatively smooth finish. It can save your time and energy. BulletPoint4 : 【Size】The size of the rotary file is about 40*10*38*93mm/1.57*0.39*1.50*3.66inch (head diameter*handle diameter*file mouth length*total length). BulletPoint5 : 【Wide Usage】Widely used in metal products, tool manufacturing, engineering, model engineering, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, cylinder head introduction, and carving. ExternallyAssignedProductIdentifier1 : 0627653801923 ExternallyAssignedProductIdentifier2 : 627653801923 IncludedComponents : ROTARY TOOL ItemName : Sphere Rotary Burr,Carbon Steel Sphere Rotary File Rotary Grinding Head,Engraving Woodworking Hand Tool,Ball Gouge Angle Grinder Attachments,for Deburring Grinding Carving Polishing(40mm) ItemPackageDimensions_Height : 10.1092 centimeters ItemPackageDimensions_Length : 3.9878 centimeters ItemPackageDimensions_Width : 9.2964 centimeters ItemTypeKeyword : power-rotary-tools Manufacturer : Generic Material : Carbon Steel MaximumRotationalSpeed : 40000 rpm MinimumSpeed : 10000 rpm ModelName : RTD36AC ModelNumber : 16300429499951 PartNumber : 16300429499951 PowerSourceType : Battery Powered ProductDescription : "Description: 1. Design: The head of the rotary file is spherical, the teeth of the file are medium teeth, and the size is moderate. 2. Material: Made of heat-treated carbon steel, the service life is 10 times that of high-speed steel. 3. Wide range of uses: Widely used in metal products, tool manufacturing, engineering, model engineering, wood carving, jewelry making, welding, chamfering, casting, deburring, grinding, cylinder head introduction, and carving. 4. Function: A very rough coating can quickly re-move the blank while maintaining a relatively smooth finish. It can save your time and energy. 5. Size: The size of the rotary file is about 40*10*38*93mm/1.57*0.39*1.50*3.66inch (head diameter*handle diameter*file mouth length*total length).