Item Type: Rotary File Material: Cemented Carbide Kits include MX0618M06, MX0817M06, MX1020M06, MX1225M06, MX1425M06 MX0618M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 6mm/0.24in, total length is approx. 65mm/2.56in MX0817M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 8mm/0.31in, total length is approx. 59mm/2.32in MX1020M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 10mm/0.39in, total length is approx. 62mm/2.44in MX1225M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 12mm/0.47in, total length is approx. 70mm/2.76in MX1425M06: Shank diameter is approx. 6mm/0.24in, cutter head diameter is approx. 14mm/0.55in, total length is approx. 70mm/2.76in Application: Suitable for surface grinding of aviation, automobile and ship, etc. Package List 5 x Rotary File 1Premium Material: Rotary file is made of cemented carbide material, heat resistant, high strength, not easy to deform, sturdy and durable. 2Excellent Performance: Professional manufacturing, exquisite workmanship, high efficiency, high accuracy, stable performance and high reliability. 3Size: Carbide rotary burr with 6mm/0.24in shank, cutter head diameter is 6mm/0.24in, 8mm/0.31in, 10mm/0.39in, 12mm/0.47in, 14mm/0.55in. 4Easy Operation: Double cut carbide rotary burr is easy to grasp and use, compact size, lightweight and portable, convenient and practical. 5Wide Application: Carbide burr is suitable for tool making, engineering, wood carving, chamferring, casting, deburring, grinding, welding, etc.